It is necessary to explain your theory _____, otherwise the   audience won't make sense of what you are trying to get across.
#25300
A
on purpose
B
at length
C
at random
D
on average
推荐题目
The student, ____whom all the teachers are pleased,is very strict ___himself ___ everything. 
#28819
A
to; with; in
B
with; with; in
C
with; at; with
D
at; with; at
Lots of waste has been dumped into the river,which has led to________.
#26173
A
lots of fish having been killed
B
kill lots of fish
C
lots of fish being killed
D
lots of fish to kill