“Do you mind if I look at your notes?”“Of course not .______”
The poisonous atmosphere will surely ______a lot of people.
Before the first nonstop flight made in 1949,it______necessary for all planes to land for refueling.
—Have you found anything wrong with your computer? —Yes,and I was about to give it up when an idea ______to me that it may be struck by some kind of virus.
We______our breakfast when an old man came to the door.
Although there is a difference in spelling,pronunciation between American English and British English,both of the countries have much to________