So that
Numbers
Tenses
Irregular verbs
Comparatives
100

He has to clean the bird so that

it can fly

100

250 000

two hundred and fifty thousand

100

Yesterday I ... (buy) some apples

bought

100

go

went gone

100

She is .... (heavy) than her sister. 

heavier

200

He has to pick up the broken glass so that

nobody will step on it

200

10 500

ten thousand and fifty hundred

200

Tomorrow I ... ride a bike

am going to/will

200

Do

did done

200

She has only good marks. She is .... (smart) girl in the school.

the smartest

300

He has to put the rubbish in the bin so that

thhe beach will be clean

300

35 000

thirty five thousand

300

He ... (work) at the police station.

works

300

Have

had had

300

She is as ... (tall) as him.

tall

400

She has to collect shells so that 

she will be able to make necklaces

400

500 000

fifty thousand

400

While he .... (walk) to school last week, he .... (hear) some noises.

was walking/heard

400

be

was/were, been

400

I am ... (old) than Jill. But Becky is ... (old).

older, the oldest

500

They have to collect sand so that

they will be able to make cement

500

1 000 000

one million

500

I ....never... to Egypt, but I have been to Turkey.

I have never been

500

understand

inderstood understood

500

The Sum island has ... (few) mountains. But the Green island has ... (little) rain. 

fewer, less

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