Last term our maths teacher set so difficult an examination problem _____ none of us worked it out. 
#71998
A
that
B
as
C
so that
D
which
推荐题目
Can you tell me______?
#72732
A
who is that gentleman
B
that gentleman is who
C
who that gentleman is
D
whom is that gentleman
______a terrible storm would take place in Hainan.
#67805
A
Word came which
B
Word came that
C
Word that came
D
Words came that
 The task requested _______ did it _______ careful and brave enough.
#69889
A
who,is
B
whom,was
C
whomever,were
D
whoever,be