Shall we request the chairman __________ our suggestion agai

Shall we request the chairman __________ our suggestion again?
A.to consider B.considering C.consider D.considered
2.Some say yes and others say no; I don't know __________ to follow.
A.whether B.what C.whom D.how
3.An explosion is a sudden increase in amount __________.
A.rapid burning causes it 　　　　　B.to be caused by rapid burning
C.causing its burning to be rapid　　 D.caused by rapid burning
4.We forgave her anger because we knew that her father's illness had put her under great _________.
A.shelter B.crisis C.stress D.nervousness
5.He never _________ to read the news but turned at once to the crossword puzzle on the last page.
A.worried B.noticed C.pained D.bothered
6.Since we can't hear you at the back of the hall,you'll have to __________ your voice.
A.improve B.increase C.raise D.open
7.The price they offered for my old car was so low that I _________ it down.
A.brought B.turned C.called D.refused
8.People appreciate _____________ with him because he has a good sense of humor.
A.working B.to have worked C.to work D.having worked
9.Inquiries _____________ the condition of the patients may be made personally or by telephone.
A.revealing B.concerning C.affecting D.following
10.Nobody knows how long and how seriously the shakiness of big businesses will _________ down the economy.
A.put B.settle C.drag D.knock

1 A request sb to do sth
2 D 有的人说是（有）有的人说不是（没有）,我不知道该“如何”来回答（选择）.
3 D 做定语修饰sudden increase
4 C 她爸爸的并给她带来很大的“压力”
5 B 他从来不“注意”看新闻而是喜欢最后一页的猜字游戏.
6 C raise your voice “大声点”
7 B turn down “拒绝”
8 A appreciate doing“人们喜欢和她一起工作,因为他很有幽默感.”这是简单的陈述一件事情,没必要用完成时.
9 B concerning“关于,有关...”的意思
10 C put down “记下、平定、镇压、放下” settle down“平息、安定、定居、安静下来”
drag down“向下拖、使下滑、把人拖垮” knock down“击倒、拆卸、降价、拒绝”