salam...
act1 .. there is mistakes
sentence 4.. kayen ghalta
tji haka
they said that their holiday had been great
sentence8 ...kayen ghalta
haka tji
he told me that he is not going to work
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act 2 ...there is no error
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sentence 4 ... there is an error
He told us that he never had been in australia
we never say
had been to australia
because ther is " had been " so it must to be " In " ah
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act 3....i think it's like ala5 telmid told you