sat on the train seat, with his eyes ____ on thefields outside the window.

The design had to be given up at last.—I know.Even experienced designers ________ make mistakes.[ ]

Dad, can I have to eat I’m hungry.–Sorry, there is in the fridge. Can you go downstairs to buy some food

__________Lei Feng is no longer living, his spirit lives on today.

I don’t think should be allowed to drive.