问题
The black box is a necessary device on an airplane, which records its speed, direction and whether everything on the airplane______ normally
A:will function
B:functioned
C:is functioning
D:has functioned
B:functioned
C:is functioning
D:has functioned
正确答案是：
同类题型
The machine can work _____than that one.
下列各句中的“得”与“轩凡四遭火，得不焚”中“得”的意思相同的一项是（ ）
Miss Smith is very kind. We all like ____.
_______, he could not persuade her to accept his idea that wealth is more important than health. [ ]
I strongly recommend that the information______ in my report____to our headmaster without delay.