A. Twice a day.

B. I think you need about an hour of exercise a day, Linda!

C. How often do you exercise, Linda?

D. How many minutes do you exercise?

E. About ten minutes.

F. Okay. I'm going to exercise an hour a day.

{#blank#}1{#/blank#}→{#blank#}2{#/blank#}→{#blank#}3{#/blank#}→{#blank#}4{#/blank#}→{#blank#}5{#/blank#}→{#blank#}6{#/blank#}

{#blank#}1{#/blank#}No, thanks.

{#blank#}2{#/blank#}I want some rice and bread.

{#blank#}3{#/blank#}Ten yuan, please.

{#blank#}4{#/blank#}Can I help you?

{#blank#}5{#/blank#}Do you want some dumplings?

{#blank#}6{#/blank#}How much are they?

{#blank#}1{#/blank#}Thank you.

{#blank#}2{#/blank#}Here's a cake for you!

{#blank#}3{#/blank#}Hello, Sam!

{#blank#}4{#/blank#}You're welcome.

{#blank#}5{#/blank#}Hello!

a How are you, Amy?

b Good morning, I'm Ms Li.

c I'm fine. How are you?

d I'm fine, too. Thank you.

e Good morning, Ms Li. I'm Amy.

A Here you are.

B Yes, I do.

C Thank you.

D Do you like apples?

E Nice to meet you.

F Nice to meet you, too.

{#blank#}1{#/blank#}Grandpa: Ah! There were no computers or Internet in my time.

     1    Grandpa: Wow, a library! There was no library in my old school.

{#blank#}2{#/blank#}Grandpa: Yes, I liked the stars.

{#blank#}3{#/blank#}Grandpa: There was only one small building on a hill.

{#blank#}4{#/blank#}Sarah: Tell us about your school, please.

{#blank#}5{#/blank#}Sarah: How do you know that?

{#blank#}6{#/blank#}Sarah: Me too. One day I'm going to visit the moon.

{#blank#}7{#/blank#}WuBinbin : Could you see starts at night?

{#blank#}8{#/blank#}WuBinbin : Easy, I looked it up on the Internet.

{#blank#}9{#/blank#}WuBinbin : The Americans took about five days to get there in 1969.