We ___________ try our best to fight against pollution.（ ）
| A． |
should |
B． |
may |
C． |
mustn't |
D． |
needn't |
Excuse me， do you know ？
It closes at 9： 00 PM．（ ）
A．when does the bookstore close today
B．when the bookstore closes today
C．when will the bookstore close today
My grandmother is going to a hobby like shopping on the Internet．（ ）
A．take upB．look upC．get up
They asked their son the bed last weekend．（ ）
A．to makeB．makingC．made
Everyone knows that China is getting ．（ ）
A．strong and strong
B．strongest and strongest
C．stronger and stronger
I have to study too much I don' t get enough sleep．（ ）
A．butB．soC．or