.--- Hi ,Tracy, you look tired.
--- I am tired. I ____the living room all day.
| A．painted | B．had painted |
| C．have been painting | D．have painted |
__________ the text a second time，the meaning will become clearer to you.
| A．Read | B．Reading | C．If reading | D．When you read |
Information technology is taught in most schools，__________we have entered the information society.
| A．so | B．while | C．still | D．for |
Scientists say it may be five or six years __________it is possible to test this medicine on human patients.
| A．since | B．after | C．before | D．when |
Parents should take seriously their children’s requests for sunglasses __________.
| A．because | B．though | C．unless | D．if |
—Shall we meet tonight?
—Sorry,I’m busy.How about_________day?
| A．every other | B．the other | C．any other | D．some other |