-- _____________ do you watch TV every day? --- For about an hour.
| A．How long | B．How much |
| C．How many | D．How often |
They can’t go out to workthe heavy rain.
| A．because | B．since | C．because of | D．as a result |
－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 |