The students _____ are hard-working and ready to help others should be praised.
| A．who | B．whom | C．which | D．whose |
This kind of animal is able to protect itself from danger in many years. ________, the colouring of its hide makes it almost invisible when it is feeding in the shadow of trees.
| A．First at all | B．First of all | C．In all | D．At all |
He moved to a foreign country, where he was obliged to ________ himself to the new habits and customs.
| A．adapt | B．adopt | C．fit | D．suit |
After graduation from college, he began to wander from city to city, _______ a suitable job.
| A．hunting for | B．taking on | C．looking after | D．bringing up |
______ in thought, he almost knocked into the car before him.
| A．To lose | B．Lost | C．Having lost | D．Being lost |
He was no longer _______ by the news of his mother’s death.
| A．affected | B．effected | C．effected on | D．affected to |