The research is so designed that once _____ nothing can be done to change it.

The research is so designed that once _____ nothing can be done to change it.

#95029

begins

having begun

beginning

begun

推荐题目

______ seems to be no possibility ______ the shy girl can win the first prize in the contest.

#92439

There; that

It; that

There; whether

It; whether

------ He should have been warned of the danger.------_________, but he wouldn’t listen to me.

#93761

So he was

So was he

So should he

So he should

The shop manager always says to his assistants, "We can never be______customers.

#94845

too

that

 _____ playing dumb with teachers. They know very well their students.

#91938

It’s no use

There is no doubt

It’s no wonder

There is no need

 I didn’t manage to do it _____ you had explained how.

#94719

until

unless

when

before

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