About 75% percent of the students can go swimming ____the rest can't.
| A．while | B．and | C．so | D．or |
If I don’t buy them, _____ will buy them.
| A．else someone | B．else anyone |
| C．someone else | D．anyone else |
–Mum, must I stay there the whole day?
--No, you ____. You _____ come back after lunch, if you like.
| A．mustn’t, can | B．needn’t, must |
| C．needn’t, may | D．mustn’t, should |
For a long time I found _____ agree with Mum’s ideas.
| A．hard | B．it hard | C．it hard to | D．it is hard to |
—The baby panda wasn’t____ to take care of ____.
| A．too old, it | B．enough old, it |
| C．old enough, itself | D．so old, it |
–It is easy to learn English well, isn’t it?
--_____. You should spend much time on it.
| A．No, it isn’t. | B．Yes, it is. |
| C．No, it is. | D．Yes, it isn’t. |