He was unaware of our coming.   
#40519
A
knew
B
realized
C
didn’t realize
D
not know
推荐题目
--_______ will you stay here? --- Until tomorrow afternoon.
#38261
A
How long
B
How soon
C
When
D
How often
How do you study _______a test?  I study _______working with friends.
#41369
A
for ; for
B
for ; by
C
by ; for
D
by ; by
It will take days by car, so let’s fly ______.
#40666
A
instead in
B
instead
C
instead of
D
instead off