1 . Sorry to say I’m busy now and can’t help ______ the lab.

A．to tidy	B．tidying
C．being tidy	D．but tidy

2 . Preparations are being made for the Olympic Games ______ in Brazil in 2016.

A．held	B．to hold
C．to be hold	D．holding

3 . What troubled the teacher was that no one present made an answer when asked who had broken the glasses, so he didn’t know who        .

A．was blamed	B．was to be blamed
C．would be blamed	D．was to blame

4 . At first my new surroundings were difficult to _________(忍受).（根据汉语意思填空）

5 . 虽然敲窗户的声音听得很清楚，但我过了好一会儿才作出反应。
Though the sound of __________ on the window could be heard clearly, it took me a long time to __________.

6 . It is suggested that all these gifts be mailed immediately _________ in time for Christmas.

A．in order to have received	B．so as to receive
C．so as to be received	D．so as to be receiving

7 . The Chinese are proud of the 29th Olympic Games _____ in Beijing in 2008.

A．hold

B．being held

C．held

D．to be held