When Peter speaks in public,he always has trouble ___ the right things to say.
| A．thinking of |
| B．to think of |
| C．thought of |
| D．think of |
We should follow one of the terms in the contract signed by the employer and the employee _______ a one-week notice should be given if an employee is to be dismissed.
| A．that | B．which | C．when | D．who |
It is reported that some wild animals were found _______ in a big cave in the mountain.
| A．to hide dead | B．hidden dead |
| C．hiding dead | D．hidden death |
I ______ on a sofa because my grandparents have come for the weekend.
| A．slept | B．was sleeping | C．have slept | D．am sleeping |
Your uncle seems to be a good driver；______, I wouldn’t dare to travel in his car.
| A．even so | B．even though | C．therefore | D．so |
What an unforgettable experience! I’ll write it down _______ it is still fresh in my memory.
| A．since | B．after | C．while | D．until |