The old man has three sons，and two _____ are doctors．
| A．of which | B．of whom | C．of them | D．of that |
Don’t hesitate ______me if you have any questions.
| A．asking | B．asks | C．to ask | D．asked |
—The English exam is not difficult, is it?
—______. Even Tom ______ to the top students failed in it.
| A．Yes; belongs | B．No; belonged | C．Yes; belonging | D．No; belonging |
----Go for a picnic this weekend, OK?
---- ______. I love getting close to nature.
| A．I couldn’t agree more | B．I’m afraid not. |
| C．I believe not | D．I don’t think so. |
The villagers, _________ had been damaged by the flood, were given help by the Red Cross.
| A．all of their homes | B．all their homes | C．whose all homes | D．all of whose homes |
It seems you need to apologize quickly ______ a good friend.
| A．avoiding to lose | B．to avoid losing |
| C．avoiding losing | D．to avoid to lose |