—How is your friend coming?
—I’m not sure. He _______ drive here.
| A．may | B．need | C．must | D．will |
Granny often tells us _______ water in our daily life.
| A．save | B．saving |
| C．to save | D．saves |
—What _______ the number of the students in your school?
—About two thousand. A number of them _______ from the countryside.
| A．is; ,are | B．is; is |
| C．are; is | D．are; are |
Hurry up! Once the concert starts, nobody _______ to enter the concert hall.
| A．allows | B．allowed |
| C．is allowed | D．is allowing |
Your dream will come true _______ you put your heart and into it.
| A．if | B．unless |
| C．although | D．So |
—Could you please have a walk with me?
—Sorry, I _______. I have something important to do now.
| A．mustn’t | B．needn’t |
| C．can’t | D．may not |