Scientists say it may be five or six years ______ it is possible to test this medicine on human patients.
#92459
A
before
B
after
C
since
D
when
推荐题目
the red switch on the left and the flying machine will swiftly go up into the air and its journey.
#92558
A
Press, begins
B
Press, begin
C
Pressed, begins
D
To press, to begin
______ was reported in the local paper, since the carrying out of the performance salary, efficiency in work has ______doubled.
#93128
A
As … more than
B
It …rather than
C
What … over
D
That… less than
The employers often give the job to __________ they believe have work experience with a strong sense of duty.
#93037
A
whoever
B
those who
C
who
D
whomever
It has been proved _______ eating vegetables in childhood helps to protect you against serious illnesses in later life.
#93434
A
if
B
that
C
what
D
when
How long do you think ______ the Microsoft brings out a new product?
#92259
A
it will be before
B
will it be until
C
will it be when
D
it will be that