He invited me to a dance after the show_______Christmas Eve. 
#29134
A
at
B
on
C
in
D
by
推荐题目
 — Have our travel plans been decided?— No, still ______.
#25228
A
out of order
B
up in the air
C
in the case
D
in the way
I cannot______ puzzled, for I simply cannot understand how I could have made such a stupid mistake.
#26289
A
help feel
B
help but to feel
C
but to feel
D
help but feel