The river smells terrible. People_______ dirty things into it .
#44850
A
must stop to throw
B
must stop from throwing
C
must be stopped to throw
D
must be stopped from throwing
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 To make our city more beautiful ,rubbish ______ into the river.
#44541
A
must throw
B
can’t throw
C
needn’t be thrown
D
mustn’t be thrown
  The girl in black trousers _____often noticed ______the teachers’ office.
#44412
A
are; entering into
B
are; entering
C
is; to enter into
D
is; to enter
Professor Virginia ______to give a lecture in our school hall yesterday.
#44830
A
invites
B
will be invited
C
was invited
D
is invited