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There is no c _________that oil price will be reduced in the following month.

We are lucky to be among the generation of people who have ______ and experienced the great social changes in our country.

A. conflicted B. responded

C. witnessed D. associated

It suddenly occurred to him he had left his keys in the office.

A. whether B. where

C. which D. that

I have found no convincing as to the truth of the accident, so I have to reserve my judgment for the moment.

A. balance B. appearance

C. evidence D. intelligence

They are trying to ________ the project to meet the deadline.

A. step up B. set up

C. look up D. pick up

—Oh no! We’re too late. The train _____ .

—That’s OK. We’ll catch the next train to London.

A. has left B. had left

C. was leaving D. would leave

Most countries of the world have records of the great natural catastrophes that before.

A. had occurred B. have occurred

C. occurs D. would occur

—Don’t you remember my name?

—I’m really sorry. Your name ________ from my mind.

A. escapes B. escaped

C. will escape D. has escaped

He is really nervous. He ______back and forth all the night waiting for the results.

A. has been walking B. had walked

C. walked D. is walking

It’s helpful to put children in a situation ___ they can see themselves differently.

A. that B. when

C. which D. where