When asked to explain _____ he did to make his students so f..

When asked to explain _____ he did to make his students so fascinated with his lessons, the teacher paused and thought deeply.A.what was it thatB.that what it was C.what it was thatD.what was it

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—What was it that caused the party to be put off?—________ ..

—What was it that caused the party to be put off?—________ the invitations.A.Because Tom delayed sendingB.Tom delayed to sendC.That Tom delayed sendingD.Tom delayed sending

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It was at 5 o’clock __________ the visitors finally arrived..

It was at 5 o’clock __________ the visitors finally arrived at Pudong International Airport.A.whenB.thatC.beforeD.after

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Was it at the school gate, if I may ask, _______ you met you..

Was it at the school gate, if I may ask, _______ you met your friends from your hometown?A.whereB.thatC.whichD.ones

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It was not until midnight________they reached the camp site...

It was not until midnight________they reached the camp site.A,that B,when C,while D,as

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