— __________ when has the country been open to international trade?
— 1978, I suppose.
| A．Since | B．In |
| C．From | D．After |
— I knocked over my coffee cup. It went right over __________ keyboard.
— You shouldn’t put drinks near __________ computer.
| A．the; 不填 | B．the; a |
| C．a; 不填 | D．a; a |
Some kinds of animals can _______ the colour of their surroundings.
| A．take on | B．dress up | C．put on | D．get into |
How I wish that I could ______ my ideas in simple and wonderful English when chatting on the net.
| A．set out | B．set off | C．set over | D．set up |
“Why don’t we go for a picnic this weekend?” “Good idea! I would ______ the car and you’ll prepare the food.”
A. look after B. take care of C. see about D get down to
I can hardly believe my eyes. What a poor composition you have _______. There are so many wrong spellings in it.
| A．turned into | B．turned off | C．turned to | D．turned in |