The warning we were given as children ________ eating fast will make you fat, may in fact, have a scientific explanation.
A．that B．who
C．where D．which
Although Anne is happy with her success, she wonders ________ will happen to her private life.
A．that B．this
C．it D．what
________ there are living creatures in the outer space as those on Earth hasn't been proved until now.
A．How B．When
C．Where D．Whether
We haven't settled the problem of ________ it is necessary for him to study abroad.
A．why B．whether
C．what D．how
It surprised us all ________ Kate made such big progress in this final exam.
A．when B．that
C．how D．whether
________ some teenagers don't realize is ________ difficult life can be after they get addicted to drugs.
A．What; what a B．That; how
C．What; how D．That; what
