There is ______ “u” and ______ “s” in the word “bus”.
| A．a； a | B．a； an | C．an； a | D．an； an |
—I’m worried about tomorrow’s math exam.
— ______ . I’m sure you will make it.
| A．Bad luck | B．What a pity | C．Take it easy | D．Don’t mention it |
Drunk driving is against the law now. It ______ be forbidden.
| A．may | B．must | C．can | D．might |
One of my friends _______ moved to America. I miss her so much.
| A．has | B．have | C．is | D．are |
You may easily lose your way in Shanghai ______ you don’t have a map or a guide.
| A．until | B．unless | C．though | D．if |
— Look at that pretty girl! Do you know _______?
— She is a dancer.
| A．who she is | B．who is she | C．what she is | D．what is she |