The teacher _______some old friends on his vacation trip to Paris.
#77006
A
dropped by
B
dropped in
C
droped by
D
droped in
推荐题目
—______ is “CHINA NEWS” shown on CCTV-4? —Every day. 
#77937
A
How often
B
How many times
C
How long
D
How soon
The doctor said he _______ an operation yet.
#75873
A
need
B
needn’t
C
needed not
D
didn’t need
His shoes are muddy. He        be working in an office all day.
#63593
A
mustn ’t
B
can’t
C
needn’t
D
maybe
The young trees should ______well as often as possible.
#75249
A
be water
B
watered
C
watering
D
be watered