当你和朋友通完电话时,你应该说“__________”。A.Hello! B. How do you do? C. Bye-bye!
An accident______ on this road last week.
Tom is often made ______for twelve hours a day by the boss.
I don’ t mind _____the door.
There are some dangerous fish in the river, and I’ve warned Jack______ here.
The old man _____live with his wife, but now he ______alone after she died.