He is an hour late by now．He last night．
| A．must stay up | B．should stay up |
| C．must have stayed up | D．should have stayed up |
To get as much firsthand information as possible, inspectors will hold workshops and distribute questionnaires, ____?
| A．isn’t it | B．won’t it | C．aren’t they | D．won’t they |
If you win the competition, you will be given ____ to Europe for two.
| A．a free 7-day trip | B．a free trip for 7-day | C．a 7-day free trip | D．a trip for 7-day free |
____ the help of experienced career instructors, this type of job-hunting training ____ to be very efficient.
| A．By; has proved | B．With; has proved | C．Under; is proving | D．With; is proved |
——Can I pay the bill by check?
——Sorry, sir. But it is the management rule of our hotel that payment ____ be made in cash.
| A．shall | B．need | C．will | D．can |
The professor walked onto the platform and seated himself in a chair, ____ for answering questions.
| A．had prepared | B．being prepared | C．preparing | D．prepared |