Walking exercises ____ be boring at times, but on a clear sunny morning nothing could be better．
| A．may | B．will | C．must | D．should |
He looked around and caught a man _____ his hand into the pocket of a passenger.
| A．put | B．to be putting | C．to put | D．putting |
He was very busy yesterday; otherwise, he _____ to the meeting.
| A．would come | B．came |
| C．would have come | D．will come |
How I wish every family ________ a large house with a beautiful garden!
| A．has | B．had | C．will have | D．had had |
There was plenty of times. She _____.
| A．mustn’t have hurried | B．couldn’t have hurried |
| C．must not hurry | D．needn’t have hurried |
If you really want yourself to be in good health, you must ___ always ___ so much.
| A．not; be smoking | B．not; have smoked |
| C．not; to smoke | D．be not; smoking |