问题

This is _______ difficult problem that few students can work it out. [ ]
A: so
B: so a
C: such
D: such a
B: so a
C: such
D: such a
正确答案是:
同类题型
I can remember well some pictures and the persons I saw in the room.
If you feel ______,you should listen to some light music to relax yourself.
Yesterday Tony bought a scooter ______ 150 yuan.[ ]
It was Tom as well as his friends that ________ for the serious accident.
The boy said no, so the monster breathed on the road and made it disappear.