1 . —Tim, will you go to Susan’s birthday party?
—Hmm... I ________ go there, but it all depends on my schoolwork that day.

A．might

B．can’t

C．must

2 . Everything is possible. No one knows what ________ happen in the future.

A．should

B．need

C．might

3 . —Betty, there are some black clouds in the sky. It ________ rain later.
—Don’t worry, Mum. I will take an umbrella.

A．can

B．might

C．should

4 . —I saw a woman standing in front of your home yesterday. It ________ be your aunt, but I’m not sure.
—It ________ be her. She has gone to Beijing for business.

A．must; mustn’t

B．would; can’t

C．can’t; might

D．might; can’t

5 . —It’s nice that you have invited Ken to our party.
—But he ________ not come. He is not sure if his father will allow him to come.

A．might

B．should

C．must

D．need

6 . —Where is Susan?
—She ________ be in the bank, but I’m not quite sure.

A．might

B．must

C．need

D．can

7 . —Whose toy car is this?
—It ________be Tom’s, but I’m not sure.

A．would

B．might

C．must

D．can

8 . —Is the young man in a white T-shirt our new math teacher?
—He ________ be. I’m not sure.

A．must

B．can’t

C．might

D．need

9 . — ________ you come to my party this Saturday?
— I don’t know. I ________ go to the doctor.

A．Must; might

B．Can; can

C．Can; might

D．Must; can

10 . She ________ be a new student here. But I’m not sure.

A．would

B．should

C．must

D．might