Since you are always working hard at your lessons, your efforts will ________.
| A．pay off | B．pay for |
| C．pay back | D．pay out |
The manager was so satisfied with allI had doneshe gave me a promotion.
| A．that; which | B．what; that |
| C．what; as | D．that; that |
You have to wear a helmet and a life jacket for protection, just ___ you fall into the water.
| A．in case | B．unless |
| C．though | D．as |
Wuhan lies _____ the Changjiang River and the Han River meets.
| A．which | B．wherever |
| C．that | D．where |
nation uses nuclear weapons will engage the whole world in war.
| A．Whichever | B．Whatever |
| C．No matter what | D．No matter which |
You are asked to attend the meeting ______ in the hall this weekend.
| A．being held | B．held |
| C．to be held | D．holding |