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
It remains________ whether Jim will be fit enough to play in the finals.
He thought about _______to Greece or Spain, but decided _____Canada. [ ]
More and more parks ________in Mentougou in five years.
There _______ two basketball matches on TV this evening.
Tom ______ there for 10 months since he ______ back to his hometown.