—Did you enjoy yourself last night?—Yes, it's very nice of you. I appreciated __________ to the party.
Professor Liu has ________ teach psychology since he came to the Central China Normal University.
---Any news about Bill Clinton? ----He left power three years ago and has a little now and a little then been ______.
If you want to sell your product you must _____ it.
Are the parents who let their child who is ______ walk in the dark alone at night considerate?
The telephone,but by the time I got indoors, it stopped.