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

推荐题目

I feel uncomfortable each time I remember the situation _____ Mary didn’t agree with me _____ the matter.

#93194

that; at

in which; over

which; about

where; to

________is no possibility ________she can finish the task in two hours.

#93407

There；that

It；that

There；whether

It；whether

 Under no circumstances, he was warned, _____ to give the password to someone else.

#93513

he was

was he

he could

could he

          you would have to go away.

#93070

One more word and

Say another word

With more words and

Say more words

 Mr. Zhang said that he would be punctual for the appointment, _______ he were late?

#93617

but what if

and what about

so what

how about

共1873题