It is a common in the USA that you should make an appointment if you want to see a doctor.
| A．rule |
| B．sense |
| C．practice |
| D．habit |
This heavy rain made______ impossible_______ us to complete the task on time.
| A．that; of | B．it; for |
| C．this; for | D．it; of |
It____ ten years ______ I graduated from university.
| A．has been; since | B．is; before |
| C．was; since | D．will be; before |
--Your father is sleeping. Don’t ______, will you?
--No, I won’t.
| A．interrupt | B．bother | C．excuse | D．break |
______ it is to have a cold drink after an _______ game!
| A．How fun; exhausting | B．What fun; exhausted |
| C．How fun; exhausted | D．What fun; exhausting |
--When ______CAAC flight 92 _______?
--Just a minute and I’ll check the timetable.
| A．is; taking off | B．will; be taken off |
| C．has; taken off | D．does; take off |