erribly sorry, Lucy．I’ve left your notebook at home．—_____ I reminded you last night．

Are you going to the cinema this evening? —- If you don’t go, __________________.

, was ________ problem solved— We were trying to think of ________ wayout, but it was hard to find one

If the Watergate Incident__________Nixon would not have resigned from the presidency.

This means that for the first time doctors may be able to tell if an infected（被感染的）person who feels well is ________ becoming ill, so that they can try to do something to prevent this