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1. Scientists estimate it may be five or ten months ______________ it is possible to test this medicine on human patients.
A.
since
B.
after
C.
before
D.
when
【考点】
引导时间状语从句的连词;
【答案】
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单选题
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1. Since I had little working experience, I had to take a series of unpaid job __________ I could find my ideal one.
A.
before
B.
after
C.
until
D.
when
单选题
普通
2. Since I have little work experience, I will have to take a series of unpaid internships ______ I could find my ideal job.
A.
before
B.
after
C.
as
D.
when
单选题
普通
3. Wang Ping was very lucky to take up the job as a guide of "Future Tour" company,
she completed her studies in the university.
A.
the instant
B.
the hours
C.
the period
D.
the clock
单选题
普通
1. I didn't realize how right my parents were
I entered high school.
语法填空（单句）
普通
2. Her voice was recognized
(instant) she entered the hall.
语法填空（单句）
普通
3. I picked up a little French
I was studying in France.
语法填空（单句）
普通
1. He smiled politely ______ Mary apologized for her drunken friends.
A.
as
B.
if
C.
unless
D.
though
单选题
普通
2. If you don't understand something, you may research, study, and talk to other people _______ you figure it out.
A.
because
B.
though
C.
until
D.
since
单选题
普通
3. ______ the average age of the population increases, there are more and more old people to care for.
A.
Unless
B.
Until
C.
As
D.
While
单选题
普通