My grandmother used ___ an English teacher.
| A．is |
| B．to be |
| C．be |
| D．being |
Would you please put the dictionary ____ it belongs ?
| A．to whom | B．to which | C．where | D．that |
___ 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 |