A: Hi, Linda! Come in, please.

B: Hi, Sam! What are you doing?

A: I'm {#blank#}1{#/blank#} some information about Sydney on the Internet. I'm going to Sydney for my holiday.

B: Aren't you lucky? Have you ever been to Sydney before?

A: No, but my father has been there twice. He told me there are many {#blank#}2{#/blank#} of interest there.

B: When are you leaving?

A: I'm {#blank#}3{#/blank#} at 9:00 am on Friday, October 5.

B: Are you going there by plane?

A: Yes, of course.

B: Have you ever {#blank#}4{#/blank#} in a plane?

A: No, never.

B: You must be {#blank#}5{#/blank#} when you fly in a plane for the first time.

A: Really, I can't wait for it.

    Many students aren't getting enough sleep at night, which means they end up feeling {#blank#}1{#/blank#} during class. Taking a nap (小睡) during the day may be a solution.

    According to Forbes, a nap can clear your mind, {#blank#}2{#/blank#} your energy and help you study even {#blank#}3{#/blank#}. But how long should a nap last? "The proper time should be between 10 and 30 {#blank#}4{#/blank#}," Peter Venn, a sleep expert said.

    Sleeping for a short time, such as five minutes or so, is not helpful. That's just not enough time {#blank#}5{#/blank#}.But if you sleep for a long time, you may wake up feeling uncomfortable.