—I’d like to play football with you, but I have an important thing to attend to. —If you don’t go, __________.
We were having a meeting _________ suddenly someone knocked at the door.
The old woman has _______________ too many hardships in the past 10 years.
---Why don’t you ______ your ideas on paper? Then you won’t forget them. --- Sounds a good idea.
Mr Smith has_______ cancer for two years but he is still working very hard.
The number of students who took part in the competition last week ________ more than 1500.