Clothing made of man-made materials has advantage over ____ made of natural ones like cotton, wool or silk.
| A．one | B．what |
| C．that | D．the ones |
All but one _____ take part in the conference ＿＿ tomorrow.
| A．is going to that is to take place | B．are going to that is about to take place |
| C．are going to that is to be taken place | D．are going to； which is to be held |
— Is Tom still smoking?
— No. By next Saturday he ____ for a whole month without smoking a single cigarette.
| A．will go | B．will have gone | C．will have been | D．has been going |
I should very much like to have gone to that party of theirs, but _____.
| A．I’m not invited | B．I was not invited |
| C．I have not been invited | D．I had not been invited |
— Sorry, I forget to post the letter for you.
— Never mind, _____ it myself tonight.
| A．I’m going to post | B．I’ve decided to post |
| C．I’ll post | D．I’d rather post |
— What were you up to when your parents came in?
— I ____ for a while and ____ some reading.
| A．was playing； was going to do | B．played； did |
| C．had played； was going to do | D．had played； did |