27．The small town_____ we spent our holiday last month lies in_____ we think is now part of Chengdu.
| A．where; that | B．which; that | C．that; where | D．where; what |
Fortunately we had a map, without _____ we would have got lost.
| A．which | B．it | C．that | D．what |
Two years later, her father disappeared, never to be _________ again.
| A．heard from | B．hear about | C．hear of | D．heard out |
We want to encourage the students ________ the teaching.
| A．to participate in | B．participate in |
| C．participating | D．participate to |
What he said was not relevant _________ the matter in hand.
| A．in | B．to | C． for | D．at |
Those _________may leavetheclassroomnow.
| A．whohasfinished | B．whohavefinished |
| C．havefinished | D．whomhavefinished |