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When ________ to danger and conflict, men tend to increase blood pressure, ________ nervous and anxious.

 Sir, a Mr. Wang is waiting for you at the gate. ________ he come in or stay there?

 Such films _____ shown yesterday ______ not worth seeing again.

A Du’s unique voice ________ especially to young people.

 New technology is being ________ almost every industrial process.

I think the English song is _________ worth _________ again.

Steve Jobs’ death _______ quickly and soon became the talk of the whole world.

Many scientists have believed that there may be a _________of life on the Mar．

 If better use is ________ your spare time，you’ll make good progress in doing your business.

Bob looked back only to find an old classmate whose name ________ him for the moment.