Look! The light in the room is still on. Mr. Liu at work.
| A．must | B．can’t be | C．must be | D．have to be |
The earlier we take action to protect our environment, the ________ it will be for our future.
| A． |
better |
B． |
best |
C． |
worse |
D． |
worst |
—This is Jenny speaking. May I speak to Dr. Wang?
—________. I’ll tell him to call you back.
| A． |
Have a good trip |
B． |
This is Dr. Wang speaking |
| C． |
I’m glad to hear that |
D． |
Sorry, he is not available now |
— Do you know March 21st is World Sleep Day? Sleep is important to us.
— Yes. A good sleep gives us ________ and makes us happy.
| A． |
truth |
B． |
fame |
C． |
energy |
D． |
culture |
—Please be quiet. We are in the library.
—________.
| A． |
Well done |
B． |
OK, I will |
| C． |
Enjoy yourself |
D． |
Long time no see |
________ Yuan Longping, the Father of Hybrid Rice, has passed away, he is forever in my mind.
| A． |
If |
B． |
Unless |
C． |
Before |
D． |
Although |