ac66u 固件下载:改错(每句有一处错):1.Look! Who sings in the next room?2.She must goes home now.

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sings---is singing
用look说明正在进行,用现在进行时态。

goes-go
must为情态动词,后面跟动词原形。

look-listen
gose---go

sings---is singing

goes-go

1,is singing
2,must加动词原形

1.Look! Who is singing in the next room?因为有look,所以用现在进行时态
2.She must go home now.must后面跟动词原型

look! who is singing in the next room?
she must go home now