(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
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That fellow hung around for hours and, ______ was worse, kept me from doing my work.
#71843
A
that
B
where
C
as
D
which
I have bought two ballpens, _______ writes well.
#73768
A
none of them
B
neither of them
C
neither of which
D
none of which
---What are you going to do this weekend ?--- Well, we’ll clean up the city parks ________ it rains..
#41095
A
if
B
until
C
while
D
unless
The humans are destroying nature day by day, ________ of course, will cause severe punishment from it sooner or later.
#73318
A
who
B
when
C
on which
D
which