What kind of first aid should you perform in this situation ____ your nose is bleeding ?
A．which B．that C．who D．where
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
