---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
We narrowly escaped _____in the forest of South America 15 years ago.
Mr. Smith spoke slowly and clearly to _____ all of us students could follow him.
Nancy enjoyed herself so much ______ she visited her friends in Sydney last year.
—How about going for a picnic this weekend? — Why not? _________.
I can’t remember the day ______ we first met in China.