David knocked at the door for nearly half an hour______Mary opened it, unwilling.
#30820
A
when
B
while
C
until
D
before
A turning point of the continuously high housing price won’t appear suddenly because there must be a certain process_______many factors lead to the change.
#30821
A
which
B
what
C
where
D
that
It doesnt matter ________ you pay by cash or credit card in this store.
#30822
A
how
B
whether
C
what
D
why
We’ve offered her the job, but I don’t know_________ she’ll accept it.
#30823
A
where
B
what
C
whether
D
which
_____ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
#30824
A
Which
B
What
C
It
D
That
I can’t remember how the tune goes, ______ I’ll recognize it when I hear it.
#30825
A
so
B
but
C
because
D
unless
It’s really unwise of some teenagers from low-income families to spend a large sum of money on Apple products ______ they could buy other cheaper brands.
#30826
A
unless
B
when
C
so that
D
in case
There’s no way of knowing why one man makes an important discovery another man, also intelligent, fails.
#30827
A
since
B
if
C
as
D
while
— What did he think of the trip to Beijing last month？— He had such a good time ________ he visited the Great Wall.
#30828
A
until
B
that
C
where
D
when
_______ I take part in a group discussion or try to speak English to someone, I find it difficult to express myself.
#30829
A
If only
B
Every time
C
Now that
D
In case
It may be 5 or 10 years __________ it is possible for people to find a space station on the moon.
#30830
A
since
B
before
C
after
D
when
Bob is determined to get a seat for the concert _______ it means standing in line all night for the ticket.
#30831
A
so that
B
as if
C
even though
D
however
The young man always talks a lot ___________ he knew everything, which, of course, makes others unhappy.
#30832
A
once
B
even though
C
though
D
as though
—How should I deal with new words in reading? —Well, you’d better not stop you come to a word or a phrase you don’t know.
#30833
A
one time
B
the time
C
every time
D
a time
— Will you go to Sarah’s wedding party?—No, ____ invited. I’m too busy to get away.
#30834
A
unless
B
even though
C
if
D
when
I was about to give up my effort to solve a problem __________ a good idea struck me.
#30835
A
when
B
while
C
until
D
before
— The plane is due to take off at 8:00 from the airport.— ______ we can’t get there in time?— Try to take another flight then.
#30836
A
As if
B
Even if
C
Only if
D
What if
You must learn to consider all possible results you begin to carry out your plan.
#30837
A
although
B
before
C
because
D
unless
His best movie was about the life of Gandhi in India, ______ won several Oscar awards.
#30838
A
where
B
who
C
which
D
that