仲裁协议的作用主要有（）。

When you walk in a street in this city, you should keep a ______ eye open for a thief.

A．bright

B．red

C．huge

D．sharp

You should keep a copy of the application in case you______the original one.

A．had lost

B．lost

C．lose

D．will lose

When listening for a speaker's evidence, you should keep an ear out for its

A.Sufficiency

B.All of the answers are correct.

C.Accuracy

D.Objectivity

A、You should move around a bit.

B、You should do some acrobatics.

C、You should keep your hands by your side.

D、You should make as many gestures as possible.

A、Keep in mind that you should express yourself clearly when working with clients.

B、Keep in mind that you must express yourself clearly when communicating with clients.

C、Keep in mind that you have to express yourself clearly when working with clients.

When turning the engine with turning gear, you should keep the indicator cocks _____.

A.attached to the indicators

B.opened

C.closed

D.broken

A、Could you bring us our check？

B、How much is the charge？

C、May I have the bill, please？

D、May I see the wine list？

A．when

B．how．

C．what

D．where