Swimmers must be very strong in order to build up speed because of the high resistance of the water. Runners, ____, must struggle against the heavy resistance of the air and ground.
| A．generally | B．similarly | C．naturally | D．probably |
—John and Lucia got married last week. Did you go to their wedding?
—No, I _________a lecture in another city.
| A．gave | B．have given | C．had given | D．was giving |
—Could you do me a favor to hand out these papers?
— ___.
| A．Yes, I could | B．It’s my pleasure | C．With pleasure | D．Great |
People from every corner of the world___China on the successful launch of Shenzhou VII.
| A．celebrated | B．appreciated | C．greeted | D．congratulated |
—Why didn’t apologize to her?
—She drove away_______I could say a word.
| A．before | B．after | C．until | D．unless |
Understanding________cultural habits of another nation is_______ difficult thing.
| A．a; the | B．the ; the | C．the; a | D．/; a |