题目内容

Never in my life______such a strange thing.

A. do I have heard
B. have I heard
C. I heard
D. I have heard

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The villagers, ______ were very happy when they saw the film for the first time.

A. in the mountain depths
B. in the mountain deeply
C. in the depths of the mountain
D. in the mountain deep

(Those of us) who work in chemical (laboratories), should have (their) lungs (checked) quite regularly.

A. Those of us
B. laboratories
C. their
D. checked

Stressful environments lead to unhealthy such as poor eating habits, which______increase the risk of heart disease.

A. in turn
B. in return
C. by chance
D. by turns

An agreement has been nailed ______ recently by the partners of the company.

A. down
B. up
C. in
D. on

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