Students should learn how        problems.
#49250
A
solve
B
solving
C
can solve
D
to solve
推荐题目
I'm going for a field trip but I haven't decided_________.
#49954
A
what to do
B
to do what
C
where to go
D
to go where
 The students were made _____ in the exercise books.
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A
hand
B
to be handed
C
to hand
D
handing
The doctor did what he could_________ the dying man.
#50563
A
save
B
to save
C
saved
D
saving