1._______ he wants to fire you,I suggest you stop wearing sp

1._______ he wants to fire you,I suggest you stop wearing sport clothes in the office.
A.If
B.Since
C.Until
D.Unless
2.Many places are flooded by heavy rainfalls,so they can’t walk _______they like these days.
A.when
B.whenever
C.where
D.wherever
3.The crowd started cheering _______he rose to speak.
A.as
B.since
C.till
D.where
4.You will not succeed unless you________harder.
A.will work
B.won't work
C.work
D.don't work
5.It was in 1969____________the American astronaut succeeded in landing on the moon.
A.that
B.which
C.when
D.in which
6.It's the third time_____________late this month.
A.that you arrived
B.when you arrived
C.that you've arrived
D.when you've arrived
7._____________the library was closed.
A.Being Sunday
B.It be Sunday
C.Sunday as it was
D.As it was Sunday
8.She looked___________ she were ten years younger.
A.that
B.like
C.as
D.as though
9.______you understand this rule,you will have no further difficulty.
A.While
B.Once
C.Though
D.Unless
10.Those____________ ,not only from books but also through practice will succeed.
A.learn
B.who
C.that learns
D.who learn
11.Do you still remember the day ________ I first came to Beijing?
A.which
B.that
C.when
D.where
12.He is a man of great experience,___________much canbe learned.
A.who
B.that
C.from which
D.from whom
13.His silence suggested that he__________our plan.
A.should not agree
B.did not agree to
C.not agree to
D.would not agree with
14.--Could you tell me where Jim lives?
--_______Jim used to live next doo to us,and now he is living in another town.
A.At the time
B.At one time
C.At a time
D.At times
15.--"How do you like the book?"
--"It's quite different from_____________I read last month"
A.that
B.which
C.the one
D.the one what
16.There is a popular belief among parents ________ schools don't pay any attention to handwriting.
A.whose
B.that
C.which
D.in which
17.--Was _______Bill,________ played football well,________ helped the blind man cross the road?
--Yes,you are right.He is always ready to help others.
A.it; that; who
B.which; that; that
C.it; who; that
D.who; which; that
18._________ is known to everybody,the moon travels round the earth once every month.
A.It
B.As
C.That
D.What
19.He paid the boy US $10 for washing ten windows,most ________ hadn't been cleaned for at least year.
A.these
B.those
C.that
D.of which
20.It was at the school ________ was named after a hero ________ he spent his childhood.
A.which; that
B.where; where
C.that; where
D.which; where