—Do you think we are going the right way to the Forbidden City?
—Sorry, I’m not sure．But it _______ be．
A．might B．will C．must D．can
The reason for his success is ______ he worked very hard.
A. why B. that C. whether D. how
Word came _______ the students would put off the outing until next week, when they wouldn’t be busy.
A. that B. when C. which D. whether
He ______ at once when I promised to help him.
A. cheered up B. gave up C. broke up D. turned up
After going into the concert hall, the mother _____ a friend and went over to greet him.
A. searched B. knew C. spotted D. realized
According to the school rules, no student __________ go out of the school after eleven o’clock at night without the teacher’s permission.
A. will B. must C. may D. shall
