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 called Hannah many times yesterday evening, but I couldn't get through. Her brother ______ on the phone all the time.
#101388
A
has been talking
B
was talking
C
has talked
D
talked
----- I’m going to the States. ----- How long ______ you ______ in the States?
#104148
A
are; stayed
B
are; staying
C
have; stayed
D
did; stay
—— We ＿＿＿＿＿ that you would fix the TV set this week. —— I’m sorry.I ＿＿＿＿＿ to fix it this week, but I’ve been too busy.
#104656
A
had expected； had intended
B
are expecting； had intended
C
expect； intend
D
expected； intend
---Stanly has graduated from the university. ---It’s no wonder that I can’t see him these days. He ___ in the city for six years.
#103578
A
has stayed
B
had stayed
C
stayed
D
has been staying
As you can see，the number of cars on our roads________rising these days.
#100314
A
was keeping
B
keep
C
keeps
D
were keeping