500. I receive ---. A. all kinds of letter B. all kind of letters C. all kinds of letter D. all kinds letters 501. The cattle made a lot of --- in the farm yard. A. noise B. noisy C. noises D. noisier 502. We sell ---. A. all kinds of cloth B. all kind of cloth C. all kind of cloths D. all the kinds of cloth 503. We must cross the street at the ---. A. pavement B. bus stop C. zebra crossing D. district 504. While you are at the greengrocer’s, please get a ---. A. greens B. salad C. lettuce D. green 505. He is a curious boy. He always --- questions. A. asks B. looks at C. says D. laughs at 506. Do you need ---? A. a help B. any help C. any helps D. helps 511. I’m afraid you --- to do this. It’s a regulation. A. should B. ought C. must D. have to 56. The person you work with is your ---. A. college B. colleague C. collaborator D. roommate 561. To make the land in good condition, we grow different ---. A. shops B. crops C. plants D. trees 583. There are two teeth need --- and one tooth need to be ---. A. pulled out/ to fill B. pulling out/ filled C. to pull out/ filling D. pull out/ fill 584. You want to address an envelope to a whole family. You write: ---. A. Mr. and Mrs. Wilson and family B. Family Wilson C. Family Mr. & Mrs. Wilson D. Mr. & Mrs. Wilson 585. When he ---, I --- my homework. A. came/ was doing B. has come/ do C. was coming/ have done D. comes/ was doing 586. You want to begin a letter to a woman you have never met. You write: ---. A. Dear Mrs. Grey B. Dear Miss. Grey C. Dear Ms. Grey D. Dear Mr. Grey 588. A pupil is answering a male teacher. The pupil says: “---.” A. Yes, sir B. Yes, Mr. C. Yes, Sir Teacher D. Yes, Mr. Teacher 592. You stop a woman in the street to ask the way. You say, “---.” A. Excuse me, Mrs. B. Excuse me C. Madam D. Excuse me, Lady 593. Those naughty boys kicked the bag --- my class. A. from B. to C. in D. into 594. She wasn’t at the seaside during the holidays. She wishes she --- there. A. had been B. has been C. would be D. were 596. You are answering a university professor. You say: “---.” A. Yes, Professor Hawkins B. Yes, Mr. Professor C. Yes, Professor D. Yes, Hawkins 598. A shopkeeper might say this to a man: “Can I help you, ---?” A. Mr. B. Sir C. Master D. Ms. 600. A shopkeeper might say this to a woman: “Can I help you, ---?” A. Mrs. B. Miss C. Madam D. Lady

(cho Δ ABC ⊥ A, đường cao AH.Biết AH=6cm, $\frac{HB}{HC}$ = $\frac{4}{9}$ tính các cạnh còn lại của ΔABC

Chỉ cần lm câu 6,7,8,9,10,em cám ơn

Tính: $B$ $=$ $($ $\frac{x^3-1}{x^2-x}$ $+$ $\frac{x^3+1}{x^2+x}$ $)$ $:$ $\frac{2(x^2-2x+1)}{x^2-x}$

Giúp mình đi mn ơi ko cô mình mắng chớt:((

Viết đoạn văn theo cách trình bày tổng phân hợp khoảng 15 câu để làm rõ vẻ đẹp Vũ Nương qua đoạn trích " Chuyện người con gái Nam Xương " của Nguyễn Dữ . Trong đoạn văn có sử dụng câu bị động và thành phần tình thái .

Vẽ đậu mầm(Ko vui cx ko buồn) `NL:` `3` ng nx đi học,ko bt ns j `=)))`

Hai điện tích điểm q1, q2 đặt cách nhau một khoảng r trong không khí. Để lực tương tác giữa chúng giảm đi 5 lần thì khoảng cách r

giúp mk dịch bài này vs ạ mk cần gấp lắm mk sẽ vote 5 sao và camon ạ

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