.Shall we request the chairman ---------- our suggestion aga

Shall we request the chairman _____a_____ our suggestion again?
A.to consider
B.considering
C.consider
D.considered
2.Some say yes and others say no; I don't know ____c______ to follow.
A.whether
B.what
C.whom
D.how
3.An explosion is a sudden increase in amount ____d______.
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 _____c____.
A.shelter
B.crisis
C.stress
D.nervousness
5.He never _____d____ 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 ____c______ your voice.
A.improve
B.increase
C.raise
D.open
7.The price they offered for my old car was so low that I ___b______ it down.
A.brought
B.turned
C.called
D.refused
8.The noise of the traffic ___b______ Paul from his work.
A.prevented
B.distracted
C.angered
D.upset
9.People appreciate ______a_______ with him because he has a good sense of humor.
A.working
B.to have worked
C.to work
D.having worked
10.Inquiries ______b_______ the condition of the patients may be made personally or by telephone.
A.revealing
B.concerning
C.affecting
D.following