In my opinion，keeping dogs should not be banned，but ______ to certain areas.
| A．limited | B．limiting | C．to limit | D．to be limited |
Once education is made free，many children who have dropped out of school .
| A．will come back | B．came back | C．have come back | D．had come back |
When I lived with my roommates in the university, we often talk into the night
| A．might | B．could | C．should | D．would |
Not until quite recently that language is closely related to culture．
| A．he realized | B．did he realize | C．had he realized | D．he did realize |
Many of friends British people make at school remain friends for life, so it is true that schooldays are “the best of life”.
| A．the；不填 | B．the; the | C．不填; the | D．不填；不填 |
__________ , she won’t talk to you after what you said to her.
| A．Surprising | B．Surprised | C．Not surprisingly | D．Not surprising |