1：___________you didn’t know the rules won’ t be a good excu

1：___________you didn’t know the rules won’ t be a good excuse for your wrong behavior.
1.It is
2.Because
3.That
4.What
2：As a host,you should come to the place ahead of schedule _______ wait for the guests to come.
1.so as
2.so as to
3.so to
4.so that
3：We are working fast to try and make______ the lost time.
1.for
2.out
3.up for
4.into
4：The discovery of antibiotics marked the beginning of a new ______ in medical research.
1.span
2.era
3.link
4.surf
5：You can borrow the book _______ you keep it clean.
1.when
2.as
3.as long as
4.so that
6：The people of the two countries differ _________each other _____ moral value.
1.from….in
2.from….to
3.between….in
4.between…to
7：Americans often greet each other simply ______ “Hello” or “Hi”.
1.in
2.to
3.with
4.for
8：Local observers hope the new traffic system will ______air links with Shanghai
1.match
2.approve
3.strengthen
4.favor
9：Great as Newton was,many of his ideas _______ today and are being modified by the work of scientists of our time.
1.are to challenge
2.may be challenged
3.have been challenged
4.are challenging
10：The articles _________ the magazine publishes are written by a famous school.
1.from which
2.which
3.and
4.of
11：The council set _________a committee to look into unemployment.
1.off
2.out
3.up
4.on
12：People’s attitudes towards gift giving may _____ from country to country.
1.very
2.vary
3.weary
4.change
13：If only I ______ answer his question.
1.can
2.could
3.may
4.should
14：Until then,his family _______ from him for six months.
1.didn't hear
2.hasn't been hearing
3.hasn't heard
4.hadn't heard
15：that Maric was able to set up new branches elsewhere.
1.So successful her business was
2.So successful was her business
3.So her business was successful
4.So was her successful business
16：The new appointment of our president _______ from the very beginning of next semester.
1.takes effect
2.takes part
3.takes place
4.takes turns
17：He was brought _______ by his aunt.
1.about
2.forward
3.up
4.on
18：We had wanted to finish our task by noon,but it didn’t quite .
1.find out
2.give out
3.hand out
4.work out