题目内容

They_____TVintheeveningTheydotheirhomework

A. arewatching
B. can'twatching
C. don'twatch
D. don'twatching

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Jenny_____Englisheveryevening.

A. hasstudy
B. studied
C. study
D. is studied

Jenny _____in an office. Her parents _______in a hospital.

A. work, works
B. works, work
C. work, are working
D. is working, work

One of the boys _____ a black hat.

A. have
B. there is
C. there are
D. has

一台1000KV·A的变压器,功率因素为0.7,则它的输出功率为()

A. 300KW;
B. 500KW;
C. 700KW;
D. 1000KW

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