It's common knowledge that black tea_____in China more than 600 years ago.
A. is invented
B. was invented
C. invents
D. invent
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Do you like the material? yes. it ___ very soft.
A. is feeling
B. felt
C. feels
D. is felt
Waste paper shouldn' t _______ everywhere. It's our duty to keep our city clean.
A. be thrown
B. throw
C. is thrown
D. are thrown
Do you have any problems if you ______ this job?
A. offer
B. will offered
C. are offered
D. will be offered
It is reported that more new classroom buildings ______ in our school next term.
A. will be built
B. was built
C. has built
D. will build
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