. China and the United States held their first strategic dialogue on August and ______to increase co-operation and constructive relations.
| A．agreed | B．would agree | C．have agreed | D．had agreed |
—Did you tell Jimmy that we’ve put off the meeting?
—No．He rushed out _____ I could say anything．
| A．in case | B．after | C．before | D．unless |
．—______ I lock the lab before I go home?
—Don’t bother．I’ll check it myself later．
| A．May | B．Must | C．Can | D．Shall |
．Interestingly in some parts of the world, women are expected to earn money _____ men work at home and raise their children．
| A．but | B．though | C．because | D．while |
Leaders of many countries have been trying to _____ what it is that makes China develop so fast in recent years．
| A．carry out | B．figure out | C．watch out | D．make out |
I’m not sure whether I will have anything else to do this evening．_____, I will try every possible means to come to your birthday party．
| A．Even though | B．If so | C．Anyhow | D．Instead |