—Have you been to the Summer Palace?
—Perhaps not in my memory．____, it might have been during my early childhood.
| A．If any | B．If ever | C．If only | D．If not |
The visitors are very ______ to see so many changes _______ in Shenzhen since 1979.
| A．surprise; have been taken place | B．surprising, took place |
| C．surprised, have been taken place | D．surprised, have taken place |
–Have you ever traveled abroad?
--Sure. I ____ the language of English in the USA two years after I graduated from the university.
| A．used to learn | B．was used to studying | C．have studied | D．didn’t use to study |
–Hi, Kate! --Hi, Mary. I ______ you are here.
A. don’t know B. don’t think C, think D. didn’t know
No one can stop news _______.
A. to report B. to be report c, from reporting D. being reported
. I heard he _______ the piano in the room last night.
| A．played | B．plays | C．to play | D．playing |