Lam giup em voi Câu 1: 1,The fire...an electrical fault. 2,There boys... the missing child. 3,This car...by Johnson in the race. 4,The centre forward... two goals. 5,This work will... there children. 6,That dog is going to...a car one of these days. 7,My mother... all the dishes. 8,The washing...by my mother every day for the last twenty years. 9,My brother... the TV set right now. 10,The eclipse... by everybody. 11,Your beer...by that man. 12,The ball has... by that player. 13,The accident...by that car. 14,He's a leader. He... the others. 15,The others... by him. Câu 2: 1,I clean my room every day. ................................................ 2,Tom bought a nice present yesterday. ................................................ 3,Ann will sing a beautiful song. ................................................ 4,Ben repaired my computer yesterday. ................................................ 5,My sister is making a tasty cake now. ................................................ 6,We have bought tickets to the concert. ................................................ 7,Helen teaches French at school. ................................................ 8,They grow strawberries every year. ................................................ 9,Tim sent an SMS to his friend. ................................................ 10,She has written a test today. ................................................

Cho 16,6 g hỗn hợp gồm nhôm và sắt tác dụng với dung dịch H2SO4 loãng dư. Sau phản ứng thu được 11,2 lít khí (đktc). a) Viết các phương trình hóa học. b) Tính thành phần phần trăm theo khối lượng của mỗi kim loại ban đầu.

Cho 10,95 g hỗn hợp Zn vs Mg tác dụng vs dd HCl dư thoát ra 4,48 lít khí H2 ở dktc a. Tính khối lượng muối thu dc b. Tính% khối lượng muối và Kim loại trong hỗn hợp đầu

Hoàn thành câu, chia động từ thích hợp ở thì quá khứ đơn 1. It/ be/ cloudy/ yesterday. 2. In 1990/ we/ move/ to another city. 3. When/ you/ get/ the first gift? 4. She/ not/ go/ to the church/ five days ago. 5. They/ happy/ last holiday? 6. How/ you/ get there? 7. My/ mother/ make/ two/ cake/ four/ day/ ago. 8. Tyler/ visit/ his/ grandmother/ last/ month. 9. John/ go/ zoo/ five/ day/ ago. 10. My/ father/ not/ at the office/ the day/ before yesterday.

1. This morning when the alarm clock (go) _____________off, I (have) _______________a sweet dream. 2. Carol met her husband while she (travel) ________________ in Europe. 3. I (work) _________________on my computer when there (be) _______________ a sudden power cut and all my data was lost. 4. When Tom (call) _______________yesterday, I (do) _______________the washing up in the kitchen, so I (not hear) ________________the phone. 5. Mark (requested) __________________complete silence when he (compose) ________________m 6. In 1417, NguyenTrai (join) __________________ the army of Le Loi, who was then leading the resistance movement in the mountainous regions. 7. I (not see) ________________Diego Maradona and his family since 2009. 8. I have answered all of the questions correctly since I (begin) ___________________ this grammar exercise on verb tenses.

Dẫn chứng việc nam đang ứng dụng cuộc cách mạng 4.0 vào sinh hoạt và sản xuất MONG MỌI NGƯỜI DẪN CHỨNG CỤ THỂ NHẤT CÓ THỂ Ạ

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1. The police man asked the boy where ______. A does he live B he lived C. did he live D. he lives

1, Tìm x: 3x ²+10x+2=10 2, Chứng minh rằng nếu a ²+b ²=2ab thì a=b Mong được giúp đỡ

Cho A và B là 2 tập hợp. Chứng minh a. A trừ B con A (A\B ⊂A) b. A giao (B trừ A) = ∅ ( A∩(B\A)= ∅) c.A hợp (B trừ A) = A hợp B ( A ∪ (B \ A) = A ∪ B )