If clauses, conditional exercises – test 2, exercise 3

Complete the sentences with if, when or unless.

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What time will you come? - I'll come I finish my project.
I will not be able to do it you help me.
it gets dark we are going to observe the stars.
I'd like to sit down here you don't mind.
you turn off the stereo I'll go mad.
the weather is nice at the weekend we'll go to the seaside.
I'll tell you I come back from work.
How much will it cost we pay in advance?
He can't go to the States he asks for a visa.

Try more if clauses exercises and zero, first, second, third conditional exercises. See also English verb tenses and verb forms for more grammar exercises and grammar rules online or in esl printables and English worksheets.

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