A container weighs more after air is put in,_____proves that air has weight.
#73698
A
as
B
it
C
that
D
which
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When asked to explain ________ he does to make his students so fascinated with his lessons, the teacher paused and thought deeply.
#69377
A
what it is that
B
that what it is
C
what is it that
D
that what is that
(2013·山东，28)________I have to give a speech，I get extremely nervous before I start.
#67434
A
Whatever
B
Whenever
C
Whoever
D
However
We are going to spend the Spring Festival in Guangzhou, ______ my parents and some relatives.
#69658
A
where lives
B
which lives
C
who live
D
where live
—Will you go to Mary’s birthday party?—No, ____ invited, I can’t go to it because I’ll be too busy then.
#68488
A
whether
B
even if
C
unless
D
when