Only under special circumstances ________to use the fire hose, otherwise they will be punished.
| A．are people permitted |
| B．people are permitted |
| C．people permit |
| D．do people permit |
.
. I thought she had retired, but ________ she hasn’t.
| A．ordinarily | B．usually | C．apparently | D．fortunately |
.
--- I suggest we set up an out-of-class club.
--- Great! That’s exactly what I ______.
| A．was thinking | B．think | C．had thought | D．will think |
.
Can you imagine what problem may ________ when human beings are cloned?
| A．raise | B．cause | C．arise | D．lead |
.
— I have learned that it is not easy to get on well with the new boss.
—______? I think that I only need to do my own job well.
| A．So what | B．what for | C．what if | D．how come |
.
— I ‘ll ask our physics teacher to explain Newton’s Second Law of Motion, which she taught us yesterday.
— That’s just _______ most of the students haven’t understood.
| A．what | B．why | C．how | D．where |