________, it began to run unexpectedly.

[　　]

A．While he was cleaning the machine

B．While cleaning the machine

C．To clean the machine

D．He was cleaning the machine

Cedric was so angry that he kicked a chair and broke one of its legs, ________ was rather funny.

[　　]

－I can hardly read what Jane's written. I wish she would write ________.

－I totally agree with you.

[　　]

It was ________ great shock to the world that two aeroplanes crashed into ________ World Trade Centre in New York on September 11^th, 2001.

[　　]

－Why does Sara know so much about Angkor Wat?

－She ________ have been there, or she may have read a lot about it.

[　　]

My bicycle is too old. I'll ________.

[　　]

A．changed it

B．change it for a new one

C．change it with a new one

D．change it into a new one

________ several times, but he still doesn't know how to do it.

[　　]

A．Having shown him

B．Being shown

C．I have shown him

D．Having been shown

－Can you tell me anything about the fire ________ last night?

－I'm afraid, ________.

[　　]

A．that broke out; very little

B．broke out; just a little

C．happened; only a little

D．taking place; a lot

－Look at the terrible situation I am in! if only I ________ your advice.

－Don't worry. Try again.

[　　]

A．follow

B．would follow

C．had followed

D．have followed

College students are free to study ________ them.

[　　]

A．whatever interests

B．whatever that interest

C．whatever interesting

D．whatever that interests