--_________ useful invention the computer is.
--Yes, It helps us a lot.
| A．What an | B．What a |
| C．How | D．How a |
I still felt very happy , ________ I had no time..
A. but B. and C. though
— How do you like the book?
— It’s too boring._______ of us likes it.
A. None B. BothC. All
— Our classroom is clean every day.
—___________.It’s our duty to keep it clean and tidy.
A. So we are
B. So is it
C. So it is
I have _____this book for two weeks. I have to return it now.
A. borrowed B. kept C. had
Now most families in China have only one child _____ the one-child policy.
A. because of
B. instead of
C. in order to