Mary ____in the garden when it began to rain.

A. interaction

B. intervals

C. interruptions

D. interpretation

A.the possible widespread unemployment caused by their introduction

B.their use as part of automated production systems

C.the least possible number of operators

D.the production system in steelworks

A. So clever are the construction robots

B. So clever the construction robots are

C. Such construction robots are clever

D. Such clever construction robots are

A. The sun was worshiped by all the Chinese people

B. The sun was thought of as a cock

C. Chinese religion and astronomy were closely interrelated

D. Sundials were first used by the Chinese

A. this is the first time has she lied

B. this is the first time does she tell a lie

C. this is the first time she had lied

D. this is the first time she was lying

A. Having suffered B. Suffering

C. To suffer D. Suffered

A. before B. until

C. when D. after

A：No, you can't.

B：Yes, please.

C：Thank you, I don't want to.

D：Sorry, I have a report to finish.

A：It's no trouble at all.

B：That's good.

C：I don't think it's a trouble.

D：That's very kind of you.

A.Yes,just one more thing

B.Oh,I'm not sure

C.Yes,still a lot

D.No,that's all