chứng minh nếu a + b $\vdots$ 3 thì $a^{3}$ + $b^{3}$ $\vdots$ 9

Ex. 4: Change into reported speech. 1. Loan explained, “My sister doesn't eat meat.” 2. Hung said, “I am doing my homework now.” 3. Mum said to me, “Can you cook the dinner for me?” 4. Mike asked John, “Do you like fruit juice?” 5. Dad told me, “Don’t touch this button. It’s dangerous” 6. He asked me, “Have you finished reading the novel?” 7. I asked the receptionist, “What time does the train leave?” 8. “Who are you going to invite to the party?", Minh asked Thu.

Bạn hãy tìm hiểu về truyền thống tốt đẹp của một gia đình, dòng họ ở Việt Nam. Qua nội dung đã tìm hiểu, bạn học hỏi được điều gì từ truyền thống của gia đình, dòng họ ấy?

em hãy chọn để giới thiệu về 1 tác giả, 1 tác phẩm truyện kí hiện đại Việt Nam vừa được liệt kê

Có ai giúp em giải bài này được không ạ

Ex 3. Change into passive. 1. John collects money to help poor children. 2. Anna opened the window silently. 3. We have already done our homework. 4. I will ask him some questions. 5. He can bring the picture home. 6. They are feeding the pigs. 7. William is not going to repair the chair. 8. Could you ride a bike when you were 5?

cho tập hợp U = {x e N | x chia hết cho 3 } trong các số 3;5;6;0;7; số nào thuộc và số nào không thuộc tập U ?

Đề bài : Viết 1 đoạn văn kể về một kỉ niệm mà em nhớ nhất. Nhanh lên nhé . Đùng copy mạng !

Ex. 2. Suply the correct verb forms of the verbs in brackets. 1/ If he (study) ________ harder, he can pass an exam. 2/ She may be late if she (not hurry) ________. 3/ Tell him to ring me if you (see) ________ him. 4/ If you are kind to me, I (be) _______ good to you. 5/ If he (give) _______ up smoking as his doctor orders, he will be soon well again. 7/ You (not pass) ________ your driving test unless you drive more carefully. 8/ He’ll be ill if he (not stop) ________ worrying so much. 9/ We’ll go to the beach tomorrow if it ( be) ________ nice. 10/ Jane never (get) ________there on time if the train leaves soon. 11/ He (come) _______ if you waited for him. 12/ If you (ring) _______ the bell, the servant would come. 13/ If it (not, rain) _______ a lot, the rice crop wouln’t grow so well. 14/ If today (be) _______ Sunday, we wouldn’t have to work. 15/ You would have to stay in bed unless your health (improve) _______. 16/ If I (have) ________ a typewriter, I could type it myself. 17/ What (you do) ________ if you got fat ? 18/ If we meet at 9:30, we (have) _________________plenty of time.

Qua điểm O vẽ 5 đường thẳng phân biệt. Hỏi có bao nhiêu cặp góc đối đỉnh nhỏ hơn góc bẹt