After Queen Elizabeth officially opened the 2012 Summer Olympics, London became the first city ________ three Olympic Games in history.
| A．to have hosted | B．hosting |
| C．hosted | D．having hosted |
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 t
o 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 |