Although Fleming discovered Penicillin, it was over a decade ______ someone else turned it into the great drug of the 20th century.

Although Fleming discovered Penicillin, it was over a decade ______ someone else turned it into the great drug of the 20th century.

#92265

before

since

when

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________ has already been pointed out, only by correcting mistakes can you make progress.

#92597

That

What

—Do you want another drink ?——           .

#95221

I don’t think so

No way

Not at all

I wouldn’t say no

I don't doubt ______ he will pass the tomorrow’s exam.

#92903

that

whether

which

 It was Alice and her friends who helped the homeless old woman,______?

#93973

wasn’t it?

wasn’t she

didn’t they?

weren’t they?

—Were all the supplies for the people carried to the flood-stricken areas?—No,      only some of them      nearly all the roads there cut off.

#93547

it was; with

they were; because

there were; for

there was; because of

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