题目内容

.Look!The twins_____their mother do the housework.

A. are wanting
B. help
C. are helping
D. are looking

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—I have got a headache.—No wonder. Youin front of that computer too long.

A. work
B. are working
C. c. worked

请统一输入小写形式（1）Listen, Mr. Wu ____ on the phone (talk).(2) I _soccer now. I’m walking (not play)(3) ——Is your father at home?——Yes ,he is .He_a TV show. (watch)(4)They_ to go to the shop. (want )(5)Don’t go out! It_____outside. (rain)

把下列单词与现在进行时句子进行连接

在计算水轮机转轮直径时， Nr 取（）。

A. 最大出力
B. 最小出力
C. 水轮机额定出力
D. 平均出力