The teacher asks us ____ our classroom.A.clean BThe teacher asks us ____ our classroom.A.cleanB.to clean C.cleaningD.to cleaning为什么选B

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The teacher asks us ____ our classroom.A.clean BThe teacher asks us ____ our classroom.A.cleanB.to clean C.cleaningD.to cleaning为什么选B
The teacher asks us ____ our classroom.A.clean B
The teacher asks us ____ our classroom.
A.clean
B.to clean
C.cleaning
D.to cleaning
为什么选B

The teacher asks us ____ our classroom.A.clean BThe teacher asks us ____ our classroom.A.cleanB.to clean C.cleaningD.to cleaning为什么选B
ask sb.to do sth.是固定的用法,叫某人去做某事.