Don’t lose heart . Keep on working hard and you will succeed________. A on time

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Don’t lose heart . Keep on working hard and you will succeed________.
A on time B at no time C at one time D in time

答案

解析

略

举一反三

I’ll get Bill to accompany me the piano when I sing a song at the concert.

A．at

B．with .

C．to

D．by

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Ladies and gentlemen , I have the great privilege introducing our speaker for tonight .

A．in

B．of

C．about

D．on

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The result of the football match was 2 to 2，______ the satisfaction of both teams.

A．with

B．for

C．at

D．to

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Don’t forget to turn on your radio at 7 p.m. this evening. We’ll be back _______ then.

A．in the air

B．by air

C．on the air

D．off the air

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Scientists are convinced _____the positive effect of laughter _____physical and mental health．

A．of ;at

B．by; in

C．of ; on

D．on ;at

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