Passengers _____ fasten their seat belts immediately after taking their seats. The belts should remain buckled during the flight whether or not the “fasten seat belt” light is on.
#62815
A
shall
B
might
C
need
D
would
推荐题目
I have trouble ________ the new words. 
#75119
A
memorize
B
to memorize
C
memorizing
D
memorized
—Jack is not in the office at the moment—Oh, he ______ those who are going to take the driving test in an hour.
#62546
A
can have instructed
B
must have instructed
C
must be instructing
D
will be instructing
The Spring Festival   in January or February.
#77617
A
celebrates
B
is celebrated
C
celebrated
D
was celebrated
I find it astonishing that he ____ be so rude to us. I _____ make a complaint to his company.
#63454
A
could; must
B
should; shall
C
shall; should
D
dare; have to