题目内容
She says that she’ll have to close the shop ________ business improves.(2013·江西，28)
| A．if | B．unless |
| C．after | D．when |
解析
I was feeling left out in the new school Alice ,an easygoing girl from Canada ,came to stay with me．
| A．if | B．once | C．when | D．unless |
________small，the company has about 1,000 buyers in over 30 countries.(2013·天津，5)
| A．As | B．If |
| C．Although | D．Once |
Jack wasn’t saying anything，but the teacher smiled at him________he had done something very clever. (2011·湖南，33)
| A．as if | B．in case |
| C．while | D．though |
He is so busy.He cannot afford enough time with his son________he wants to.(2013·四川，7)
| A．even if | B．as if |
| C．because | D．before |
________ he stops driving himself like this, he'll have a breakdown.
| A．Until | B．Once |
| C．Since | D．Unless |
________ you need something, please don't hesitate to let me know.
| A．Even though | B．In case |
| C．As though | D．Even if |
You seem to have a readymade answer ________ I ask you a question.
| A．whenever | B．whatever |
| C．whichever | D．whoever |
We haven't settled the problem of ________ it is necessary for him to study abroad.
| A．why | B．whether |
| C．what | D．how |