题目内容

The Great Wall___ all over the world.

A. knows
B. knew
C. was known
D. is known

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It's common knowledge that black tea_____in China more than 600 years ago.

A. is invented
B. was invented
C. invents
D. invent

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