The problem requires ______.
#97533
A
studying with great care
B
to study carefully
C
to be studied without carelessness
D
taking great care of studying it
推荐题目
Time should be made a good use ____ our lessons well.
#98588
A
of to learn
B
of learning
C
to learn
D
to learning
Could you show me the TV set you’d like ________?
#95710
A
to have repaired
B
repairing it
C
to have it repaired
D
to repair it