I met a friend of mine _____ I was walking in the park.

I like English very much, so I ________ read English in the morning.

The festival __________ for almost a month.

Do you know Xidan Girl?—Of course. She played _____ guitar and sang song in the 2010 Spring Festival Gala.

You needn’t take an umbrella. It isn’t going to rain.—-Well, I don’t know. It_____do.