Allen followed his customer across the yard and stood on the step of the house, two shopping bags.
| A．lifted | B．having lifted | C．to lift | D．lifting |
Mr. Wang, who is said to have immigrated to the USA, __ at No.2 Middle School in our city for twenty years.
| A．has been teaching | B．was teaching | C．taught | D．has taught |
---Can you read the sign, sir? No smoking allowed in the lift!
---______________.
| A．Never mind | B．Don’t mention it | C．Sure, I don’t smoke | D．Pardon me |
---This passage is difficult for me. Could you please explain it to me?
---I’m afraid I have to say sorry, but the book is ________ my understanding.
| A．beyond | B．over | C．above | D．off |
I know a little bit about Italy as my wife and I __________ there several years ago.
| A．are going | B．had been | C．went | D．have been |
_______ opening ceremony of the 28th Beijing Olympic Games really gave the world _________ big surprise.
| A．不填; a | B．The; the | C． The; a | D．不填; the |