The river smells terrible. People must_____ dirty things into it.
#55102
A
be prevented to throw
B
prevent from throwing
C
prevent to throw
D
be prevented from throwing
推荐题目
It’s cold here. Why not ________ your coat? 
#61421
A
put on
B
dress up
C
try on
D
take off
If you feel tired , you  may stop _______.
#61228
A
have a rest
B
to have a rest
C
having a rest
D
has a rest