23. Although he offered her a high salary, he could not ____ her to accept a position with his firm.
| A．persuade | B．advise | C．suggest | D．convince |
Nobody believed his reason for being absent from the classhe had to meet his uncle at the air port.
| A．why | B．that | C．where | D．because |
If you are travelingthe customs are really foreign to your own, please do as the Romans do.
| A．in which | B．what | C．when | D．where |
Isn't it time you got down tothe papers?
| A．mark | B．be marked | C．being marked | D．marking |
I just wonder ____ that makes him so excited.
| A．why it does | B．what he does | C．how it is | D．what it is |
Some people fear that ________ air pollution may bring about changes in _______ weather around the world.
| A．/; the | B．the; / | C．an; the | D．the; a |