---Linda, I called you this morning, but nobody answered the phone.--- I am sorry. I         football with my friends then.

一It was really very kind of you to give me a lift．一Oh，don’t  mention it．I_______ past your workplace anyway．

I ________a primary school student two years ago.

There ______ great changes in our hometown in the past fifteen years.

If Tom _____ the game, we’ll give him a surprise".