Category 1
Category 2
Category 3
Category 4
Category 5
100

I have saw this film before.

– saw–seen

100

I need buys a new laptop.

– buys–to buy

100

You must goes now.

– goes–go

100

She is interested on history.

– on–in

100

There is too many noise.

– many–much

200

She has lived here since three years.

– since–for

200

She enjoys play tennis.

– play–playing

200

When I was younger, I can run fast.

– can–could

200

He is good in football.

– in–at

200

My parents are kind; it help me.

– it–they

300

While I was read, the lights went out.

– read–reading

300

He stopped work last year.

– work–working

300

You should goes to bed earlier.

– goes–go

300

I am afraid from dogs.

– from–of

300

I often am tired.

– often am–am often

400

He usually go to bed late.

– go–goes

400

I decided goes home early.

– goes–to go

400

It looks dark; it will rain.

– will–might

400

I bought a bread yesterday

– a–some

400

He take a taxi yesterday.

– take–took

500

They was very excited.

– was–were

500

I remember close the window.

– close–closing

500

This depends of you.

– of–on

500

This problem is easyer than the last one.

– easyer–easier

500

We are watch a film now.

– watch–watching