1 I was so angry that I ____on her.
2 I'm afraid that the line is busy,would you like to___?
3 The danger of war____Europe for 21 years.
4 Don't ___ .We have a train to catch.

想知道:(hang up和 hang about) (hang on和 hang up)的区别.

-----hang on phrasal verb
1 to hold something tightly
hang on to
She hung on to the side of the cart.
Hang on tight!
2hang on!British English spoken
a) used to ask or tell someone to wait [= hold on]:
Hang on! I'll be back in a minute.
b) used when you have just noticed or thought of something that is interesting or wrong
3hang on somethingto depend on something:
Everything hangs on the outcome of this meeting.
4hang on somebody's words/every wordto pay close attention to everything someone is saying:
She was watching his face, hanging on his every word.

----hang up phrasal verb
1 to finish a telephone conversation:
I said goodbye and hung up.
hang up on
Don't hang up on me.
2hang something ↔ upDCC to hang clothes on a hook etc:
She took her coat off and hung it up.
3hang up your hat/football boots/briefcase etcinformal to stop doing a particular kind of work


----hang about phrasal verb
1 spoken to move slowly or take too long doing something:
Come on, we haven't got time to hang about!
2hang about (something)to spend time somewhere without any real purpose:
There were always groups of boys hanging about in the square.
He normally hung about the house all day.
3hang about!spoken
a) used to ask someone to wait or stop what they are doing
b) used when you have just noticed or thought of something that is interesting or wrong:
Hang about - that can't be right.


参考文献：The LDOCE Online Dictionary