There’re too many clothes in the shop. I really can’t decide           .

—Have they visited the zoo many times.    
—______________.   Only once.
A. Yes, they have         B. No, they haven’t       C. No, they have

“They have a lot to eat and drink.” It is a structure of ________.

It’s not clever_______ others’ homework.         

________ important _________ us to eat a balanced diet.
A. It’s, for           B. That’s, for       C. It’s, to

---          of shoes do you wear?   - - Size 7.

---_______ her father work?  --- In a restaurant.

It       Yang Liwei about 21 hours       the earth 14 times in his spaceship.

There ________ children playing games in the park.

Why ____________ enjoy Beijing opera with us?