Dr. Black is a professor of chemistry. ______

Dr. Black is a professor of chemistry. _______, he is a famous writer.

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In all

In brief

In fact

In addition

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People try to avoid public transportation delays by using their own cars,and this___creates further problems.

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in short

in case

in doubt

in turn

 — Thank God you’re safe!— I stepped back, just _______ to avoid the racing car.

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in danger

in case

in time

in need

 I asked him what he hoped _____ his birthday.

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on on

at at

to to

for for

The teacher asked us to put weekends ______ good use.

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with

for

____about the experience in the tourist attraction, he feels very excited and with it.

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To talk

On talking

By talking

Talk