The math problem was _________ difficult __________ none of us worked it out.
#41277
A
very; that
B
too; to
C
so; that
D
enough; that
推荐题目
--Must I finish my homework now, Mum?  ----No, you_____.
#40418
A
needn’t
B
mayn’t
C
mustn’t
D
can’t
After a long walk, the girl felt very __________.
#41287
A
happy
B
tired
C
angry
D
relaxed
 Mr. Li makes me________, because it is bad for my health. 
#40987
A
don’t smoke
B
not to smoke
C
not smoking
D
not smoke