It has been many years since I was last in London_______I still remember something that happened during that visit.
I think you’d better _____ your spare time better.
Since the able person, John, is in ______ charge of the matter, we’re sure that the matter is under _____ control now.
I am too tired to go there. __________, it’s getting dark.
Gun control is a subject ___ Americans have argued for a long time.
- We’d better do something to call on people to protect wild animals. - Yes,.