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Experts suggest that parents should let their child do tasks that he is physically and mentally capable of doing by himself, ______ will help to build a self-confident kid.

A. that B. who C. which D. what

I can’t imagine what air we would be breathing in if we __________ anything to stop air pollution.

A. hadn’t done B. didn’t do

C. haven’t done D. don’t do

We all can feel something unusual about Kate, but she just _________ let us know what it is.

A. shouldn’t B. mustn’t

C. needn’t D. won’t

When effectively _______, the feedback we share with students or employees can develop their awareness of their own learning.

A. managing B. being managed

C. managed D. to manage

So far, Mike has spent about $28,000 on the house and __________ it to cost about $38,000 when it is finished and furnished.

A. expected B.expects

C. has expected D. will expect

Although Beijing didn’t establish its first Antarctic research base until 1985, Chinese efforts _________ its influence across the continent are now outpacing other nation’s plans.

A. expanding B. to be expanded

C. expanded D. to expand

It’s only after marriage and having children ________ a person understands others’ feelings.

A. what B. when C. that D. who

--- Why didn’t you ring me up when Sue arrived?

---sorry, I ______ my essay that was to be handed in by noon.

A. had written B. wrote

C. have been writing D. was writing

The agreements, _______ from culture and education to special training programs, will play a key role in the China-Latin America partnership.

A. ranged B. having ranged

C. ranging D. to range

Almost every gym club in Shanghai ________ yoga classes. And there are more than 100 special clubs such as this one.

A. has set up B. is setting up

C. set up D. will set up