My father likes smoking. He often says that giving up smoking is the easiest thing in the word. I know because I________ it thousands of times.
I can’t forget the time _______ the earthquake happened in Yushu.
Could you please tell me _______? I’ve lost her address.
We’ll go for a picnic if it _______ this weekend.
It’s very hot here. Why not _______ your coat?
I don’t want to read this book. There is _______ in it.