This is an illness that can result in lung cancer ____ left untreated.
| A．after | B．if | C．since | D．unless |
—Go and ask her come .
—OK.
| A．what time would she like to | B．at what time she’d like to |
| C．when would she like to | D．when she likes to |
—I rang you at about nine, but there was no reply.
—Oh, that was probably I was seeing the doctor.
| A．why | B．when | C．what | D．that |
She looks sad. Could you please tell me ____ that prevents her from being as happy as before?
| A．what it is | B．it is what | C．how it is | D．it is how |
I just can’t figure out the meaning of the word---so I’ll have to ___ the dictionary.
| A．look up | B．go over | C．check in | D．refer to |
Being determined is a kind of quality and that’s ________ it takes to do anything properly.
| A．how | B．which | C．where | D．what |