You need to warm up your voice and muscles before giving your speech.

The thermostat is closed when the engine is cold to allow the engine to warm up more rapidly.

How should you warm up a diesel engine that has not been run for some time? （）

The amongst the world's scientists is that the world is likely to warm up over the next few decades.

It’s warm inside. You can take( )your coat. A: on B: up C: down D: off

She has a very ______ attitude to life and never gives up hope. A: positive B: indifferent C: negative D: warm

Why didn't the smoke keep going up? A: Because there was a layer of warm air up here B: Becauseit happened in the swamp C: Becauseit came back down. D: Becauseof the fire.

Choose the most appropriate answer by completing the sentences below or answering the questions. 1. What does the phrase verb “warm up” mean in the text?

Yoga practice should be carried out in a regular and orderly manner. Before practice, you need to warm up so as not to cause sports injury.

It's quite warm in the room. Why not 　 your coat? A: pick up B: take off C: put off D: give away