You had better book rooms at the hotel in advance _____you should find no room on your arrival.

You had better book rooms at the hotel in advance _____you should find no room on your arrival.

#31041

so that

even if

in case

now that

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You seem to have a readymade answer ________ I ask you a question.

#30271

whenever

whatever

whichever

whoever

So although Fleming discovered penicillin, it was over a decade ___________someone else turned penicillin into the great drug of the 20th century.

#34272

when

that

before

unless

Scientists say it may be five or six years _______ it is possible to test this medicine on human patients.

#33536

since

after

before

when

—Do you have a minute？I've got something to tell you.—OK，________ you make it short.

#30439

now that

if only

so long as

every time

Tourism, _______ it brings in money to a country, can also result in damage to the World Heritage sites there.

#30698

once

while

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