We should have teamspirit but there are a few occasions_____members are uncertain of their roles.
#73565
A
when
B
whose
C
why
D
which
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We’ll have to finish the work, ____. 
#69414
A
no matter how long does it take
B
it takes however long
C
however long it takes
D
however it takes long
   difficulties we’ll meet,we must finish the work in time.
#71617
A
However
B
Whatever
C
Whichever
D
Wherever