请英语高手帮助几题大学英语.

请英语高手帮助几题大学英语.
1.We consider ________ the instrument be adjusted each time it is used.
A.that it necessary
B.necessary that
C.it necessary
D.that necessary
2.It was in China ________ Dr.Bethune gave his life to the cause of the revolution.
A.that
B.for where
C.in which
D.at which
3.He ran ________ no one could catch him.
A.so fast as
B.very fast that
C.that fast for
D.so fast that
4.Young _______ he is,he is equal to the task.
A.although
B.because
C.as
D.however
5.Going out in a hurry,_________.
A.Floyd's keys were left on the table
B.Floyd left his keys on the table
C.Floyd have left his keys on the table
D.the keys were left on the table by Floyd
6._______ coming of the Space Age,a new area has been added to the study of the planets.
A.While
B.It is the
C.When the
D.With the
7.It was the training that he had as a young man _______ made him such a good engineer.
A.that
B.has
C.what
D.later
8._______ is a spell of warm sunshine.
A.What do all of us need
B.What all of us need do
C.What need all of us
D.What all of us need
9.I don't think there is _______ to worry about,_______?
A.nothing...do I
B.something...isn't there
C.anything...is there
D.anything...is it
10.You _______ too careful with your work.
A.cannot being
B.cannot be
C.cannot to be
D.can be
11.Without a passport,leaving the country is _______.
A.out of question
B.without question
C.in the question
D.out of the question
12.This custom,_______,is slowly disappearing.
A.of many centuries ago began
B.which began many centuries ago
C.with many centuries of beginning
D.beginning for many centuries
13.He had been suffering from a kind of disease _______.
A.whose cure is unable
B.of which the cure is possible to do
C.for which the cure is possible
D.whose cure is a recent discovery
14.Helen was much kinder to her youngest child than she was to the others,_______,of course,made the others jealous.
A.what
B.which
C.who
D.that
15.The goals _______ he had fought all his life no longer seemed important to him.
A.after which
B.for which
C.with which
D.at which