—When did you get to know the professor over there? —It was at the work shop we did reserch to gether two years ago.
—Go now?— It's too late; tomorrow will be a _________time for you to visit them.
Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.
—Must I turn off the gas after cooking?—Of course. You can never be____ careful with that.
I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.
Although my grandfather is in his eighties, he is still as ________ as a young man and hates sitting around doing nothing all day.