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
Going on a trip into space must be quite exciting experience.
A．/ ; the B．the; the C．the; an D．/ ; an
