The argument remains extremely heated       it is necessary to frequently update teaching material.
#69189
A
that
B
which
C
if
D
whether
推荐题目
We’ll go to the park if it ________.
#41361
A
won’t rain
B
don’t rain
C
doesn’t rain
D
not rain
 Please check the list carefully ________________ make mistakes.
#69416
A
so not as to
B
so as not to
C
so as to not
D
not so as to