Put the verbs in the present perfect or past simple 1.______you_____(see) Alan yesterday? 2.We____(not have) a holiday last year 3.My friend is a writer.She____(write) many books 4.____you ever____(be) to Ha Noi? 5.John works in a library. He______(work) there for three years 6.I_____(buy) this computer four years ago 7.What time____you_____(go) to bed last night? 8.We______( find out) why the printer refused to work 9.We_________(not see) our new teacher yet 10.I_____already____(do) the homework Làm hộ mình và chỉ mình dấu hiệu từng câu với ạ mình cảm ơn nhiều lắm ạ

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