Students should learn how problems.
#49250
A
solve
B
solving
C
can solve
D
to solve
推荐题目
She hardly ever speaks English after class, for she is afraid mistakes.
#50275
A
to making
B
to make
C
of make
D
makes
That little boy preferred ________ out to play rather than ________ TV at home.
#49650
A
going; to watch
B
to go; watch
C
going; watching
D
to go; watching