The black box is a necessary device on an airplane, which records its speed, direction and whether everything on the airplane______ normally.
#102293
A
will function
B
functioned
C
is functioning
D
has functioned
推荐题目
I didn’t mean to keep you waiting here for a long time. There are several traffic jams on the way. Can you ____ me?
#99347
A
apologize
B
interrupt
C
forgive
D
behave
I didn’t like Aunt Lucy, who＿＿without warning and bringing us presents.
#104416
A
always turned up
B
has always turned up
C
was always turning up
D
was always turned up
I fixed my eyes upon the newcomer, wondering whether I ________ him somewhere before．
#99984
A
saw
B
has seen
C
had seen
D
would see
Nobody in the class except you and me _____ to the principal about the air quality problems.
#104686
A
has complained
B
have complained
C
complain
D
complaining
My mind wasn't on what he was saying，so I'm afraid I ________ half of it.
#99744
A
was missing
B
had missed
C
will miss
D
missed