a) Tìm các ước của mỗi số: 30; 42; -50; b) Tìm các ước chung của 30 và 42.

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chỉ cần ghi đáp án 130. - How ________do you listen to music? - Once a week A. far B. long C. often D. times 131. What is the weather like in summer ? A. hot B. cold C. cool D. warm 132. I am from Viet Nam. I speak________ A. Vietnamese B. Chinese C. English D. Japanese 133. He is interested ________English. A. in B. at C. of D. with 134. You are good ________Math. A. in B. at C. on D. with 135. He stays ________a week. A. with B. in C. for D. at 136. Minh stays ________ his friends. A. in B. with C. for D. at 137. There are twenty-five pupils ________ in my class. A. on B. in C. of D. at 138. I don’t go to school ________Sundays A. in B. at C. on D. for. 139. How ________do you go to fishing? - Once a week. A. usually B. sometime C. often D. never 140. I ________like some orange juice. A. can B. could C. will D. would 141. Ho Chi Minh City is the ________city in Viet Nam A. larger B.large C. largest D. very large 142. How ________students are there in your class ? There are 45 A. much B. many C. long D. old 143. How ________kilos of meat does Lan want? A. much B. many C. long D. often 144. We have ________and beautiful forests A. long B. big C. tall D. short 145. _______ going to HaLong Bay ? A. How about B. What about C. Why don’t we D. A and B are right 146. The weather is often ________in fall. A. cold B. warm C. cool D. hot 147. There isn’t ________milk in the bottle. A. some B. any C. a D. an 148. ________Nam like hot weather ? A. Is B. Does C. Do D. Be 149. ________eggs do you want ? A. How many B. How often C. How much D. How old