Ever since middle school,my sister and I have dreamed about{#blank#}1{#/blank#}(take) a great bike trip.After graduating{#blank#}2{#/blank#}college,we finally got the chance to cycle along the entire Mekong River,{#blank#}3{#/blank#}runs past many{#blank#}4{#/blank#}(country) and into the Pacific.{#blank#}5{#/blank#}my sister didn't know the best way of getting places,she insisted that the trip{#blank#}6{#/blank#}(organize) by her. And her{#blank#}7{#/blank#}(determine) look showed that she had made up her mind.{#blank#}8{#/blank#} (Luck),the trip was great fun.It was so amazing{#blank#}9{#/blank#}we found{#blank#}10{#/blank#}(we) satisfied with it.

    A fifteen­year­old boy named Justin Foster in Dover，New Hampshire went missing two days ago. {#blank#}1{#/blank#} was not until the lunchtime the next day that he was found missing. His mother became{#blank#}2{#/blank#}(worry) and asked her husband to call the police. People offered various explanations for his {#blank#}3{#/blank#}(appear). Kelly，his sister said that Justin {#blank#}4{#/blank#}return home the night before and even heard him put on his favourite CD，{#blank#}5{#/blank#}just then she happened to see a large spaceship {#blank#}6{#/blank#}(fly) outside，so she thought Justin must {#blank#}7{#/blank#}(take) away by aliens. Some people also said that they themselves experienced this kind of thing. But Detective Sam Peterson，who took charge {#blank#}8{#/blank#}the case，said that there was really no  hard {#blank#}9{#/blank#}(evident) that aliens took him and that they wouldn't give up until they found out {#blank#}10{#/blank#}had happened.

    Big Ben is one of London's best-known landmarks, which is {#blank#}1{#/blank#} nickname of a bell hanging in the clock tower at the {#blank#}2{#/blank#} (north) end of the Houses of Parliament in Westminster, London. Some believe it got {#blank#}3{#/blank#} (it) name from Sir Benjamin Hall. Officially, the tower itself is called Elizabeth Tower. It was {#blank#}4{#/blank#} (previous) known as just the Clock Tower, but was renamed in September 2012 in honor of Queen Elizabeth II. However, most people, {#blank#}5{#/blank#} (include) those that live in London, call the tower "Big Ben", because it is very large.

    Designed by Edmund Beckett Denison, the clock took 13 years to build and it {#blank#}6{#/blank#} (complete) in 1859. It has worked continuously since then except for a few months in 1976 when it {#blank#}7{#/blank#} (break) down and had to be fixed. Since August 2017, repair work is being done on the clock, which will take four years. For the {#blank#}8{#/blank#} (safe) of those doing this work, Big Ben no longer rings out every hour. It will still be heard {#blank#}9{#/blank#} special occasions, such as the New Year and Remembrance Day.

    The Elizabeth Tower has become one of the most important {#blank#}10{#/blank#} (symbol) of the United Kingdom and is often in the establishing shot of films set in London.

    As an attractive city in the Netherlands, Amsterdam is one of the most bicycle-friendly{#blank#}1{#/blank#}(city)in the world, having over 800, 000 bikes in the capital. By comparison, the city has a population of only 750, 000, less than {#blank#}2{#/blank#}number of bikes. According to a survey{#blank#}3{#/blank#}(make)5 years ago, 490, 000 people used bicycles every day.

    Up to now, people in Amsterdam{#blank#}4{#/blank#}(enjoy)the convenience of cycling for decades. The city has special facilities for cyclists, {#blank#}5{#/blank#}can be used for free. Compared with other transportation in the city, bikes are{#blank#}6{#/blank#}(clean)and less expensive while also{#blank#}7{#/blank#}(offer)health benefits.

    {#blank#}8{#/blank#}reason for bicycle riding is that bicycle traffic is{#blank#}9{#/blank#}(relative)safe. Amsterdammers ride a wide variety{#blank#}10{#/blank#}bicycles. Many tourists also discover Amsterdam by bike, which is a typical Dutch way.