III. Rewrite the sentences below, using the present perfect. 12/ Where you (come) …………………….from in Finland? -I (come) ………….from Helinki. But I (not live) ………there since I was ten years old. 15/ The first olympic games (take)……….. place in Greece in 776 16/ People (start)…………. to use computer about 50 years ago. 17/ What ‘s that noise? - The children (play)…………… tug of war Rewrite: 15. Unless we protect the environment, we will destroy ourselves.If............................... 16. Unless she is more hard-working, she will get low marks.If..................................... 17. Unless he listens to his parents, he will fail.If............. Put the words in the correct order to make a sentence: 10. your eyes/ swimming/ should/ when/ goggles/ you/ you/ go/ wear/to protect HELP ME!!!!!!!!!!!

Bạn nào có lòng tốt giải hộ mình với ạ 1.Wearing embroidered jeans is her intersest -> She is 2.This is the first time I've worn jeans -> I have 3.They don't sell painted jeans here ->Painted jeans 4.They'll introduce a new style of jeans soon -> A new style 5.Her father began driving a taxi in 2007 -> Her father has been a 6.She bought this pair of jeans last month -> She has 7.These students shoud be told the exam result as soon as possible -> Someone 8.Wearing a T-shirt and jeans is comfortable -> It is 9.People took coffee to arabia in the 13th century -> Coffee 10.How long has she been living here -> When this 11.It was raining,so he took his umbrella -> He took 12.I don't have her phone numbe,so I can't call her -> If 13."I don't want to go jogging today,"said John -> John said 14.They started working in that factory in 2001 -> They have 15.The room is completely empty! -> What 16.When's your birthday? -> When

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Giúp em làm vs ạ. Cảm ơn rất nhiều

nhanh còn kịp x^2 - căn 100 = 0

tìm 3 số tự nhiên liên tiếp nhau biết tổng của chúng bằng 42

Bài 1 a)|x-1,7|=2,3 b) |x+3/4|-1/3=0 Bài 2 a) |2,5-x|=1,3 b) 1,6-|x-0,2|=0 c) |x-1,5|+ |2,5-x|=0 Bài 3 a) (1/7x-2/7).(-1/5x+3/5).(1/3x+4/3=0 b) 1/6x+1/10x-4/15x+1=0

help zới My brother is one meter 70 centimeters tall =>what.......................................................................... How tall is your brother what............................................................... the building is over 100 meters in height What..................................................... this lake is 5 meters in depth What........................................................ Tom is fourty five kilos What..................................................... The blue dress is 120 thousand dong What................................................................. it's about 2kms from here to the bus stop What..........................................

Cho đa thức A = 5 x y mũ 2 + x y + x y mũ 2 - 1 phần 3 x mũ 2 y + 2x y + x mũ 2 y + xy + 6 a, thu gọn rồi xác định Bậc của đa thức kết quả b, tính đa thức B sao cho A + B = 0 c, tìm đa thức C sao cho A + C = -2 x y + 1

Tính pH của dung dịch sau DD tạo thành sau khi trộn 200 ml dung dịch HCL 0,02M với 200ml dung dịch H2SO4 0,05M