_____ the steep mountains，he had no difficulty reaching the top.
| A．Having accustomed to climb | B．Having accustomed to climbing |
| C．Accustomed to climb | D．Accustomed to climbing |
My friend, who ________ on the International Olympic Committee all the time, is retiring next month.
| A．served |
| B．is serving |
| C．had served |
| D．has served |
Mr White ________ at 8:30 for the meeting, but he didn’t show up.
| A．should have arrived |
| B．should arrive |
| C．should have had arrived |
| D．should be arriving |
I’m feeling rather ________ in my present job; I need a change.
| A．frustrate |
| B．frustrating |
| C．frustrated |
| D．to be frustrated |
—________leave at the end of this month.
—I don’t think you should do that until ________ another job.
| A．I’m going to; you had found |
| B．I’m going to; you’ve found |
| C．I’ll; you’ll find |
| D．I’ll; you’d find |
If you are feeling so tired, perhaps a little sleep would _______.
| A．act |
| B．help |
| C．serve |
| D．last |