Many a professor__________looking forward to visiting Germany now.Many scientists
__________studied animals and plants in the last two years.
| A．is; have | B．is; has | C．are; have | D．is; are |
We laugh at jokes, but seldom __________ about how they work.
| A．we think | B．think we | C．we do think | D．do we think |
Wu Juping, ______ the most beautiful mother, is also popular with foreigners for her saving the baby _________ off the high building.
| A．honored; falling | B．honoring; falling | C．honored; fallen | D．honoring; fallen |
__________ to the left at the crossroads, and you will see the railway station on your right.
| A．Turning | B．If you turn | C．Turn | D．Having turned |
Unfortunately, the research was limited __________ increasing economic profits, _________ protecting the environment.
| A．to; other than | B．by; rather than | C．to; rather than | D．by; more than |
We have to realize: boys share activities, _________ girls share feelings.
| A．while | B．when | C．as | D．since |