Mike wants to be a policeman. He thinks it is a good ______.
–Have you ever ________ an amusement park?--Yes, I have.I ________ Fun Times Amusement Park last year.
–Have you finished your homework yet?--Yes, I ________ it twenty minutes ago.
What a nice day! You should go sightseeing ___________ watching TV at home.
You’ll ___________ swim when summer comes.
I saw Sam __________ football when I passed the playground.