问题
The river smells terrible. People_______ dirty things into it .
A:must stop to throw
B:must stop from throwing
C:must be stopped to throw
D:must be stopped from throwing
B:must stop from throwing
C:must be stopped to throw
D:must be stopped from throwing
正确答案是：
同类题型
______ the teacher has given permission, ______allowed to use the equipment in the lab.
Giving a hand to others _____ little, but it’ll bring you _____ much.
He ______ the test again, in which case, his mother will be very disappointed.
You are wearing a blue dress．How beautiful it is!—_____________________