Употребите модальные глаголы could, should, ought to там, где необходимо. open the door, please? we did an exam yesterday. we six questions out of ten. i'm sorry i ) come yesterday. i late. it's late and you're very tired. you to bed. i wanted to speak to martin yesterday but i find him.
2) could
3) couldn't , ought to
4) should
5) could