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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He's late, __is often the case.

#92571

what

this

It will be a long time           Mr Black            back from abroad.

#94801

before;comes

since;has come

before;will come

after;will come

Europeans made ______ clear that they did not want to take the Roma as neighbors.

#93258

very

that

     is reported in the newspaper is that seventeen climbers have been killed in the snow storm

#93509

That

What

In many parts of China, ________ the idea ______ boys are more important than girls.

#93015

it has; which

there exists; that

there is existing; which

there remains to be; that

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