Christina wasn’t saying anything, but the professor smiled at her _______she had done something very clever. 
#31695
A
as if
B
now that
C
while
D
though
推荐题目
The children ran away from the orchard(果园)________ they saw the guard.
#32861
A
for the moment
B
by the moment
C
the moment
D
at the moment
You will succeed in the end ________ you give up halfway.
#32435
A
even if
B
as though
C
as long as
D
unless