___ comfortably in his armchair, the old man enjoyed the light music over the radio with his eyes half ___ .
| A．Seating ; closed | B．Seated ; closed | C．Sitting ; close | D．Sat ; closing |
I’m afraid I can’t take down what you’ve just ___.
| A．refered | B．referred to | C．refered to | D．referred |
America belongs to the ___country while China and India are both ___countries.
| A．developing; developed | B．developed;developed | C．developed;developing | D．developing;developing |
The teacher asked us to ___ Lesson Ten if we hadn't finished it.
| A．go on to read | B．go on reading | C．go to read | D．go with reading |
--Have you ever been to Beijing?---Yes, and I still remember ___ there when I was a little boy.
| A．to take | B．to be taken | C．taking | D．being taken |
He'll never say a word about it ___ you have explained it to him.
| A．once | B．before | C．on order that | D．so that |