－Where _______ the 2008 Olympic Games _______?.
－You don’t know? Beijing!
| A．will; hold | B．has; been held | C．was; held | D．will; held |
______ he is very busy, Li Ming always helps others.
| A．Although | B．If | C．Unless | D．Since |
The visitors our factory two days ago.
| A．got | B．reached in | C．arrived | D．reached |
The story happened ________ the 19th century
| A．in | B．at | C．on | D．of |
Sign means “please don’t park your car here.”