Answers

2016-01-06T17:58:23+08:00
1. catching(present)- He is catching the ball.
    caught(past)- He caught the cheaters.
    will catch(future)- He will catch better next time.

2. announcing(present)- He is announcing the next Ms. Universe pageant                                                 winners.
    announced(past)-       He mistakenly announced Ms. Colombia as the                                                   winner.
    will announce (future)- He will announce the winner later.

3. inventing(present)- It is being invented.
    invented(past)      -  He invented the light bulb
    will invent (future) - He will invent something innovative

You finish the rest, you should know already based on my examples....


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