1st and 2nd conditionals
Adjectives and adverbs
Conjunctions and prepositions
Future perfect continuous
Ing and infinitive
Past perfect continuous
Present perfect pcntinuous
Pronouns and determiners
Questions and auxiliary verbs
Simple future will
My mobile is ringing. It ... be Kate.
When I was young I ... play football very well.
Your hair's too long. I think you ... get it cut.
b) have to
Liz ... get tired of her job sometimes. It is so boring.
c) has to
Where's Tom ? He ... be in his office.
a) is to
... it be true? I don't believe it.
... we stay or leave ?
That club ..... be very good. It is always full of people.
You got here very quickly. You ..... have run.
Do you have a pen? No, but ask Peter, he may ..... one.
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