—Linda, I called you this morning, but nobody answered the phone.—I’m sorry. I ________ football with my friends then.

I don’t remember when and where I       this umbrella.

 ----“Have you ever been to HK, Jim?”----- “ Yes ,  I ______ there for two weeks with my parents last summer.”

Someone ______ at the door. Can you open it?

This is the best hour I can _________ I_________ in the past twelve years.