I didn’t know  ________.
#38751
A
when did the plane take off
B
when the plane took off
C
when the plane takes off
D
when does the plane take off
推荐题目
—The light in his office is still on. Do you know         ?—In order to prepare for tomorrow’s meeting.
#36919
A
if he works hard
B
why he stays up so late
C
that he is so busy
D
when he will stop working
—Could you tell me.        ? —Yes, it will start at nine. 
#37169
A
when will the meeting begin
B
when the meeting will begin
C
where the meeting begins
D
where does the meeting begin
Could you tell me ______ there?
#37106
A
when the first bus will arrive at
B
when would the first bus arrive
C
when the first bus arrived at
D
when the first bus arrives
I watched the man for a long time and wanted to know      .
#38473
A
whether I have seen him before
B
where I had seen him before
C
that I had seen him before
D
when did I see him
They were _______ busy _______ with each other to remember the time.
#36540
A
enough; talking
B
enough; to talk
C
too; talking
D
too; to talk