The work is so difficult that I don’t know _______ to do it.
A. what B. how C. where
— It’s really kind of you to care for my pet dog while I was away for the whole year.
— _______. The dog is loyal. We’ve been close friends.
| A．With pleasure | B．Never mind |
| C．Don’t mention it | D．It doesn’t matter |
—I will go to Hong Kong Disneyland with my parents tomorrow. —________!
| A．My pleasure | B．Have a nice trip |
| C．All right | D．Congratulations |
You are sure to fail the exam__________you study hard.
| A．if | B．unless | C．since | D．that |
There ______a number of books in our school library. The number of books________getting larger than last year.
| A．is, is | B．is, are |
| C．are, are | D．are, is |
The play _______ one and a half hours yesterday.
| A．lasted | B．lasted for |
| C．is lasting | D．lasts |