The reason I have to go is my mother is ill in bed.
A. why...why B. why...because
C. that...because D. why...that
He made a promise anyone set him free he would make him very rich.
A. that B. if
C. what D. that if
The notice came around two in the afternoon the meeting would be postponed.
A. when B. that
C. whether D. how
______ he can hardly read is ____________ he is slow in mind.
A. what; that B. That; what
C. What; because D. That; because
When I try to understand ________ that prevents so many children from being happy, there seem to be three causes.
A. why it is B. what it does
C. why it does D. what it is
—The two people speak different languages and can not communicate with each other well.
—Oh，I see. That’s ________ misunderstanding occurs.
A．when B．what
C．which D．why
