Noonehasyetsucceededinsolvingt

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更新 2022-09-03
科目英语
题型单选题
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挑错有奖

No one has yet succeeded in solving the _____ of how life first began.

A．biology

B．gravity

C．puzzle

D．theory

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He ______ at once when I promised to help him.

A．cheered up

B．gave up

C．lighted up

D．turned up

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难度：未知

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We usually take turns ______cleaning ,and today it is my turn ____it

A．to do; doing

B．doing; doing

C．doing ;to do

D．to do ;to do

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I am looking forward to ______ your answer as soon as possible.

A．receiving

B．being received

C．receive

D．be received

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.Nothing will _____ us ____going if we want to go.

A．prevent…from

B．stop…from

C．keep…from

D．AB&C

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The boy that his cock an egg yesterday.

A．lied, lay

B．lied; laid

C．lay; lied

D．laid; lain

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