The chemical factory was torn down （ ） protecting the environment.

Frankfurt, Germany, is one of the most （ ） populated regions in Western Europe.

He had never given a speech to so many people, so he felt（ ） .

William suggested _____ a party for Elizabeth who was going to retire soon.

He talks as if he _____ everything in the world.

She heard a terrible noise, （ ） brought her heart into her mouth.

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

I certainly didn’t appreciate （ ） when I made mistakes.

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

She didn’t want to go to Africa: probably （ ） the weather is too hot.

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

We arranged to meet at the station but she did not （ ）.