There’re so many kinds of tape-recorders on sale that I can’t make up my mind _____ to buy. 
#98788
A
what
B
which
C
how
D
where
推荐题目
This is the best way I have thought of __________ the problem.
#93344
A
to be solved
B
solving
C
to solve
D
solves
The doctor did __________ save the patient’s life.
#91043
A
that he could do
B
all what he could
C
all he could to
D
which he could