Although the teacher had told Bob the history of telephone, Bob didn’t know when ____.
#37382
A
it was invent
B
was it invented
C
it was invented
D
it invented
推荐题目
---I don’t know_____________?---In ten minutes.
#36712
A
how long has he been here
B
how long will the film last
C
how often he goes to visit his parents
D
how soon the film will begin
— Has the homework been finished? — Our teacher asked you .
#79222
A
whether had the work been finished
B
if the work had been finished
C
the homework has been finished
D
the work had been finished
With his work completed，the businessman stepped back to his seat，feeling pleased ________ he was a man of action.
#78769
A
which
B
that
C
what
D
whether
We should consider _______ use can be made of such a piece of cloth.
#79288
A
what
B
that
C
how
D
which