（ ） you decide to take up, you should try to make it a success.

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

Since Dick was busy, he rarely had time to go to the cinema; _____.

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

（ ） weather may be too hot to the tourists.

Plastics is a kind of （ ） which is widely used in industry.

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

（ ） some mammals came to live in the sea is now known.

（ ） when she started complaining.

—Where are the children? The dinner’s going to be completely ruined. —I wish they （ ） always late.

To be frank, （ ） is a great relief to have the task fulfilled in so short a time.

The two companies decided to （ ） on a project concerning animal cloning.