A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers ______

A professor of biology gave a talk to more than 1000 students on elephants living conditions and the dangers _______ them.

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face

facing

faced

are facing

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------Is your father a teacher of English in the No.l Middle School?-------No! But he _________ English there for ten years.

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has taught

has been teaching

taught

had taught

So far a total of 19 cases______ and another 36 people are being treated on the assumption that they are infected with Legionnaires Disease.

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were confirmed

have confirmed

are confirmed

have been confirmed

The train ＿＿＿＿＿ at the present speed until it reaches the foot of the mountain at about nine o’clock tonight.

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went

is going

goes

will be going

By the time we reach that page, we ___________ twenty lessons of the book.

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will study

will have studied

would study

have studied

The robber would ____ to 7 years in _____ prison.

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sentence; /

be sentenced; /

be sentenced; the

sentence ; the

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