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
This time next week I’ll be on vacation .Probably I ________ on the beach.
#101932
A
am lying
B
have lain
C
will have lain
D
will be lying
-----If I wasn’t busy., I could have been back by 5:30 o’clock. ----- What a pity! She____ here to see you.
#104912
A
is
B
was
C
had been
D
has been
We first met on a train in 2000. We both felt immediately that we ______ each other for years.
#104080
A
knew
B
have known
C
have known
D
know
Hurry up，or by the time we __________ at the cinema，the film will ha ve begun．
#99384
A
had arrived
B
will have arrived
C
will arrive
D
arrive