I have already forgotten ______ you bought the computer.
| A．that it was when | B．that was it when |
| C．when was it that | D．when it was that |
—Go now?
— It's too late; tomorrow will be a _________time for you to visit them.
| A．better | B．good | C．best | D．more |
Compared with his sister, Jerry is even more_____to, and more easily troubled by , emotional and relationship problems.
| A．sceptical | B．addicted | C．available | D．sensitive |
—Must I turn off the gas after cooking?
—Of course. You can never be____ careful with that.
| A．enough | B．too | C．so | D．very |
I'm certain David's told you his business troubles. ______, it's no secret that he owes a lot of money to the bank.
| A．However | B．Anyway | C．Therefore | D．Though |
Although my grandfather is in his eighties, he is still as ________ as a young man and hates sitting around doing nothing all day.
| A．enthusiastic | B．intelligent | C．energetic | D．sensitive |