1.change into present perfect tense affirmative
a develop
b be
2.change into present perfect tense negative
a sign
b give
3.complete the sentence using Present perfect tense interrogative form of the verb
a they make
b he take
c you do
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Answer:
1) a)develop- has developed
b)be- has been
2) a)sign- hasn't signed
b)give- hasn't given
3) a)they make- haven't they made?
b)you do- haven't you done?
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