Being examined twice a year, whether it is a car or a bus or a truck, is the rule that every driver _____ obey in this city.
| A．shall | B．can | C．ought to | D．need |
. Busy as he is, he ________ a few hours a week for physical exercise.
| A．set off | B．set about | C．set aside | D．set away |
He was once turned down by a primary school for lack of ________ practical teaching experience. But now he has turned out to be one of ________ best teachers in the city.
| A．a; a | B．/; the | C．the; the | D．a; the |
It could take 4-6 months before the first batch（批）of vaccines （疫苗）are available to fight A/H1N1 flu ________ as swine flu, WHO officials said.
| A．known | B．to know | C．knowing | D．having known |
Young people tend to get up very late unless ________ to rise early.
| A．required | B．requiring | C．they were required | D．to require |
No reader ________ take away a book from the library without the permission of the librarian.
| A．need | B．might | C．shall | D．will |