Evidence has been piled up ________ drinking water after getting up in the morning contributes to one's health.
A．what B．which
C．if D．that
It is usually thought ________ a little child says is truth.
A．what that B．that what
C．which D．that
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
