15. Three quarters of the land here _____ wet land, an ideal place for migrating birds.
| A．are | B．is | C．have been | D．Being |
Watching TV is ________ a kind of relaxation, and it also _______ our knowledge.
| A．not more than; adds | B．more than; adds to |
| C．no more than; adds to | D．more than; adds up to |
Excuse me, but can you tell me________.
| A．where can I get to the library | B．Where I can get to the library |
| C．how can I get to the library | D．how I can get to the library |
The number of the people in the room_______sixty, but a number of them_________students.
| A．was, was | B．was, were | C．were, were | D．were, was |
What did he say? I don’t know what________.
| A．did he say | B．he says | C．he said | D．he is saying |
I told your friend how to get to the hotel, but perhaps I______have driven her here.
| A．could | B．should | C．must | D．might |