B. Complete the sentences using the Present Perfect or the Present Perfect Continuous.
1
Mary ……………………………………………………………...on a phone for two hours now!(talk)
2
Justin ………………………………………………………………an email. (write)
3
I …………………………………………………………………….her for five years. (know)
4
They ………………………………………………………………..all day. (study)
5
We ……………….just …………………….our room. (clean)
6
Tom ……………..never………………..………..to Paris. (be)

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