The room _______ very useful when we had visitors.
A．was proved B．has been proved
C．has proved D．proved
I doubt _______ he will win or not.
A．whether B．if C．that D．when
-----I’m afraid I’ve broken your chair.
----- .I can easily get it fixed .
A．You’re welcome. B．Not at all.
C．With pleasure. D．Never mind.
It was not until dark ______ he found that it was the correct way to solve the problem.
A．that B．what C．which D．when
_______ breaks the law should be punished.
A．Anyone B．Those who
C．No matter who D．Anyone who
Einstein was __ a great scientist. He did a lot for human rights and progress.
A．no more than B．not more than
C．more than D．as much as
