题目内容
—May I go swimming this afternoon?
— I'm afraid not _______ you have finished your homework.
| A．if | B．unless | C．because | D．but |
B
解析试题分析：句意：今天下午我可以去游泳吗？如果你没有完成作业恐怕不行。A. if如果 B. unless如果不C. because因为D. but但是，根据句意，故选B。
考点：考查连词的用法。
— Does your aunt usually walk the dog in the park?
— Yeah, bad weather stops her.
| A．when | B．since |
| C．unless | D．if |
Rick has learned a lot about Chinese culture _____ he came to China.
| A．before | B．when | C．until | D．since |
—What do you think of Confucius?
—He was an ancient teacher ______ wise sayings have influenced many people in different countries.
| A．that | B．which | C．who | D．whose |
Don't be afraid of asking for help ______it is needed.
| A．when | B．after | C．although | D．unless |
She didn’t know__________she could express her ideas clearly when she was invited to speak at the meeting.
| A．what | B．why | C．how | D．whether |
More historical buildings in the old town will fall down ________we try our best to protect them.
| A．if | B．since | C．unless | D．in order that |
Tom didn’t go hiking with his classmates ____ his illness.
| A．because | B．because of | C．as | D．since |
Mr. Zhou was really anxious _____he can’t find his car.
| A．while | B．because | C．though | D．until |