Last year, my brother and I went to Miami for a vacation. Some of my friends who had been there before said {#blank#}1{#/blank#} was a Wonderful holiday destination. Before we went, we had planned for months. When the day came, we were ready.

    After our plane landed, we went to the hotel. We had made our reservation six months{#blank#}2{#/blank#}(early), but the man at the front desk said there had been a mistake. We{#blank#}3{#/blank#}(tell) that our rooms hadn't been reserved for that week,{#blank#}4{#/blank#} for the week after. I didn't understand {#blank#}5{#/blank#}this would happen and my credit card had already been charged {#blank#}6{#/blank#} the reservation. What's worse, the hotel had been fully hooked. When we were wondering what to do, the manager came out. She was {#blank#}7{#/blank#}(surprise) helpful. She apologized for the mistake and gave us a spare VIP room on {#blank#}8{#/blank#} top floor. We had never stayed in such an amazing room, and we weren't charged extra.

    The next day, my brother and I went to the beach {#blank#}9{#/blank#} we watched some people play volleyball. We got a little {#blank#}10{#/blank#}(sunburn), but the day had been so relaxing that we didn't mind.

    Rivers are one of our most important natural resources. Many of the world's great cities are located on rivers and almost every country has at least one river {#blank#}1{#/blank#} (flow) through it, which plays an important part in the lives of {#blank#}2{#/blank#} (it) people.

    Since the beginning of history, people {#blank#}3{#/blank#} (use) rivers for transportation. The Yellow River and Changliang River play a large role in China. The Mississippi, the {#blank#}4{#/blank#} (long) one in the United States ever influenced the American people {#blank#}5{#/blank#} (great) in history. The lifeline of Egypt is the Nile. Rivers provide fresh water {#blank#}6{#/blank#} drink, grow crops, make electricity and chances to have fun for those {#blank#}7{#/blank#} live along their banks.

    {#blank#}8{#/blank#} the cities grow in size and industries increase in number, the river water is severely being polluted. It urges all countries to make {#blank#}9{#/blank#} (decide) and take immediate action to stop it from {#blank#}10{#/blank#} (pollute) any more.

    China's Chang'e 5 mission {#blank#}1{#/blank#} (successful) delivered samples of moon rocks and dust to Earth on December 17, 2020. It marks {#blank#}2{#/blank#} first time in 44 years that moon rocks have been brought back to our planet.

    The sample capsule landed in Inner Mongolia {#blank#}3{#/blank#} a little after 2:00 a.m. Thursday local time. The drop-off was the ending of a 23-day mission that began on November 23, {#blank#}4{#/blank#} China sent up Chang'e 5 from a site on Hainan Island. The mission's goal was {#blank#}5{#/blank#} (collect) at least four pounds of material and bring it back to Earth.

    The material collected by Chang'e 5 was from a site in the northwest region of the moon's near side. This area was formed more recently, and the rocks here {#blank#}6{#/blank#} (think) to be only about 1.2 billion years old now. That means scientists {#blank#}7{#/blank#}(study) the material could learn more about the {#blank#}8{#/blank#} (evolve) of the moon.

Although Chang'e 5 was a short mission, it was one of {#blank#}9{#/blank#} (complex) projects undertaken by the Chinese space program so far. The country is far from done with the moon—Chang'e 6, {#blank#}10{#/blank#} (it) second lunar sample return, is ready to launch in 2023 or 2024.