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phamnhat13458
2 năm trước
Tìm 2 số nguyên tố x và y biết $x^{2}$ + $2^{x}$ + $4^{n}$ - $2^{n+1}$ + 2 =0
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B) Fill in the blanks with " was - were, wasn't - weren't, did - didn't ". 1, My mother .................. hospital yesterday. 2, Ahmet .................. go to school yesterday. He ........... ill 3, We ........... very happy. Because we ........ fail the exam 4, "Hi Su. ......... you see Selim?" "No, I ............. .He .......... with his father in the morning." 5, "........... you see my bag?" "Yes, I ............. . It ............ under the bed." 6,"What ......... you do yesterday?" " I ........... with my friends. We ......... shopping and it .......... a funny day. 7, I ......... very sad yesterday because I .............. find my wallet while I ......... in a restaurant. 8,We .............. at the concrect last night. It ......... great. 9, Serkan ........... come to mmy birthday party. He ......... with his girl friend. 10, I saw a bat yesterday. It ......... very frightening. 11,"............... you go to work last week?" "No, I didn't. Because I ...... ill" 12," Why ....... you so unhappy yesterday?" " Because I lost my wallet." Đây là link nha: https://text.123doc.net/document/3787755-20002-was-were-did.htm

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