He had little idea that it was getting so late, ___________?
| A．didn't he | B．wasn't it | C．did he | D．was it |
___ I have often heard this song, I have never heard you sing it.
| A．In case | B．Though | C．Even | D．In spite of |
I wouldn't manage to do it___ you had explained how.
| A．unless | B．until | C．when | D．since |
She often wears the same kind of skirt ___ her twin sister does.
A, that B.which C.as D.what
Don’t talk such things ___ you don't understand.
| A．that | B．which | C．what | D．as |
This is the same bicycle ___ I lost.
| A．as | B．that | C．which | D．A and B |