According to the air traffic rules, you______switch off your mobile phone before bearding.
#89102
A
may
B
can
C
would
D
should
推荐题目
--- I didn’t tell my parents the secret yesterday. --- But you ______.
#87697
A
ought to do
B
ought to
C
should
D
ought to have
If it were not for the fact that she_______sing, I would invite her to the party.
#90464
A
couldn’t
B
shouldn’t
C
can’t
D
might not
It is requested that each of the teachers invited ______ a performance at the party.
#86930
A
give
B
will give
C
has to give
D
must give