28. --Jane walked past me without greeting.
--She ________ you.
| A．can’t see | B．couldn’t see |
| C．can’t have seen | D．mustn’t have seen |
The little boy is dirty from head to foot because he ________ in the mud all morning.
| A．has played | B．is playing | C．has been playing | D．was playing |
.The new dictionaries are very useful. They ________ well and ________ already .
| A．sell; have been sold out | B．sold; had sold out |
| C．sell; sell out | D．are sold; have been sold out |
— We want someone to design the new art museum for us.
— ________ the young fellow have a try?
| A．May | B．Shall | C．Will | D．Need |
This is an illness that can result in total blindness ________ left untreated.
| A．after | B．if | C．since | D．unless |
— I put him down for a well - educated man.
— ________?
— I mean that he's a well - educated man.
| A．I beg your pardon | B．Speak louder, will you | C．What's that | D．Will you repeat word for word |