The scientists ________ on the new medicine for two years. They will succeed in no time.
A.work | B.are working | C.have worked | D.will work |
The art club is for members only. You can’t go in ____ you are a member.
A.unless | B.because | C.if | D.though |
I have a lot of rules at home, _________
A.So has Peter. | B.So Peter has. |
C.So does Peter. | D.So Peter does. |
I think _________ history about China is very important.
A.study | B.studying | C.studied | D.studies |
--Have you found the information about famous people __ you can use for the report?
-- Not yet .I’ll search some on the Internet.
A. which | B.who | C.whom | D.what |
It’s rude to laugh ______ others when they have trouble ______ something.
A.at; do | B.to; doing |
C.with ; to do | D.at ;doing |