1．They were about to go back home when the accident happened.
2．They couldn't，even if they would，get out of trouble by themselves.
3．The movie Gone with the Wind is really a success.I have never seen a better (good) one.
4．Where did she pick up this companion?
5．She being (be) absent，the meeting had to be put off.
Ⅱ.单句改错
1．Nothing else is precious than water in the desert.is后加more
2．If buyers pay in advance，they can make large wholesale purchases at discount.at后加a
3．Read this sentence and tell me if it makes a sense.去掉a
4．I know only a little about the twins，Jane and Mary，but I think Jane is more beautiful of the two sisters.more前加the
5．The work finishing，they left the office and went home.finishing→finished
