How long do you think it will be _______ scientists succeed in providing a cure for cancer?
#92242
A
when
B
after
C
since
D
before
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It is well known that ____ the flower is to grow,____the price is in the market.
#92139
A
harder; higher
B
the harder; the higher
C
the more hard ; the more high
D
more harder ; more high
_____ in the regulations that you should not tell other people the password.
#92752
A
What is required
B
What requires
C
It is required
D
It requires
_________a stone tower near the old pine tree.
#92773
A
It used to be
B
There used to be
C
There used to have
D
It is used to be
It was not until the teacher had explained it three times _______ how to work out the problem.
#92129
A
did he understand
B
had he understood
C
that he understood
D
that he didn’t understood
______put great pressure on the local government to tell the truthfulness of the tiger photo as soon as possible.
#93252
A
The great loss of lives in the mine
B
The human cases of bird flu
C
The customers’ complaints
D
The questions from people especially experts