The engineer （ ） my father works is about 50 years old.

The audience stood and （ ） at the end of the performance.

If I had remembered （ ） the window, the thief would not have got in.

（ ） weather may be too hot to the tourists.

In the swamp the army （ ） by mosquitoes.

When I was a child, I used （ ） to the river and bathe in the evening.

It’s high time we _____ strict measures to stop pollution.

The shy girl felt quite （ ） and uncomfortable when she could not answer the interviewer’s question.

I am looking forward to _____ from you as soon as possible.

_____ finished his work, he had to stay at home on the weekend.

We’re talking about the piano and the pianist （ ） were in the concert we attended last night.

The most important is not_____ you do, but_____ you do it.