I’d appreciate ________ if you could let me know in advance whether or not you will come.

—He was early drowned in a pool.—Oh, when was ______ exactly?— It was in 1983 _______ he was swimming with his friends.

—Can I come to your house on Saturday or Sunday ?　—________is OK. I’m free this weekend.

— Did you call on any of your old friends when you returned to your hometown ?—______ of  them . They were all very busy .

Shanghai is bigger than             in Jiangsu and it’s also a very beautiful city.