– Listen ! Is Professor Johnson giving a report in the hall?
– No, it _______ be him. He has gone to America.
| A．needn’t | B．can’t |
| C．may not | D．mustn’t |
-I've got a "C" in the English test.Can you give me some _______________？
-Of course.I think reading can help.
| A． |
messages |
B． |
information |
| C． |
suggestions |
D． |
instructions |
Diet drinks（低热量饮料）are not quite as ___________ as you think.It is reported that drinking too many of them might lead to illness.
| A． |
helpful |
B． |
healthy |
C． |
popular |
D． |
delicious |
More and more children are interested in blind boxes __________ they wonder what is inside.
| A． |
so |
B． |
because |
C． |
unless |
D． |
though |
-Judy，why is your dog barking（吠叫）at the mirror？
-Because it can't recognize（认出）________ in the mirror.
| A． |
me |
B． |
it |
C． |
you |
D． |
itself |
The sign 
means that we must slow down and drive______ near the school.
| A． |
quietly |
B． |
quickly |
C． |
carefully |
D． |
seriously |