It __________ Tom that parked the car here, as he is the only one with a car.
| A．may be | B．might have been |
| C．must have been | D．could be |
A few years after his graduation from a university, the man acquired theof being a philosopher.
| A．reputation | B．influence | C．impression | D．knowledge |
In that school, English is compulsory for all students, but French and Russian are ______.
| A．special | B．regional | C．optional | D．original |
What are you doing out of bed ,Tom? You are to be asleep.
| A．supposed | B．known | C．thought | D．considered |
Genius is a complicated concept , many different factors.
| A．involved | B．involving | C．to involve | D．being involved |
We had hardly arrived at the foot of the Yuntai Mountain it began to rain heavily .
| A．than | B．when | C．until | D．after |