---_____ you ever _____ to Nanjing? ---Yes, I _____ there last year.

----- Have you heard of Earth Day ?----Yes . The first Earth Day ______ in 1970 to educate us to protect our planet .

— They say there’s a new clothes store nearby.                          — Yes, and it________ for no more than two weeks. 

I am very sad that I ______ many chances in the last few years.

—____________ Jill ______________ on the phone again?—Yes. He often _____________ on the phone for an hour.