---Mr. White didn’t come last night, did he? ---No. We for him. A whole night was wasted. A. had waited B. have been waiting C. were waiting D, had been waiting
What shall we use for power when all the oil in the world has ________ ?
My English-Chinese dictionary has disappeared. Who ________ have taken it?
—Excuse me, but I want to use your computer to type a report —You ________ have my computer if you don’t take care of it.
The form and pictures introduced in the book ________ the content of the article.
The theory ________ by Einstein was later to prove true, but at that time few people could accept it.