Help me Tổng nồng độ ion trong 900ml dung dịch có hòa tan 17,04 gam Na2SO4

IV. Complete the sentences with a form of "have to” or "should". Make the verbs negative when necessary. 1. Your hair's too long. I think you get it cut. 2. Your clothes are dirty. You wash them. 3. I'm going to bed. I get up early tomorrow. 4. I'd like to meet your best friend. You invite him/her round. 5. I tell my parents where I am, then they don't worry. 6. You come with me if you don't want to. I'll go on my own. 7. If you need some help with your homework, you go to the library. 8. If you have a ticket, you queue. You can go straight in. 9. You tell lies. It's wrong. 10. Nick works too much. I think he take it easy

Biết góc C1 = 65 . TÍNH GÓC D1,D2 ( nhanh giúp với)

III. Read the passage about introducing Vietnamese customs to foreigners, and then choose the best answer A, B, C or D. The Vietnamese are known to be polite, hospitable and sensitive. They have a casual and friendly (1) . They regard friendship as being very important throughout one’s life. They are always open to visits from friends. Drop-in visits are welcome. The Vietnamese are very (2) to their family. When they (3) you a gift, the Vietnamese will usually speak lightly about it. Even though it is an expensive gift, they may pretend it is of no great monetary value. (4) 4,000 years of civilization, the Vietnamese are proud people who like to recite to a myth that they are descendants of an angel and a dragon. If you happen to be in their homes at meal time, the Vietnamese will probably (5) you to sit down and share whatever food is (6) . Let them know that you enjoy their food is one way in successfully (7) a better relationship with them. When they invite you to their homes for a meal, celebration, or special occasion, some (8) - usually food, fruits, chocolate or liquors - should be offered to the host’s family. 1. A. tradition B. feature C. culture D. manner 2. A. closed B. closing C. close D. being closed 3. A. offer B. carry C. send D. sell 4. A. Of B. With C. At D. In 5. A. take B. require C. speak D. invite 6. A. good B. present C. available D. delicious 7. A. setting B. building C. taking D. being 8. A. gifts B. invitations C. offers D. situations

plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

giúp em bài 3 bài 4 này với ạa!!!

Em hãy kể lại một trải nghiệm bằng một bài văn * chú ý * phải được kể từ người kể chuyện ngôi thứ nhất giới thiệu được trải nghiệm đáng nhớ tập trung vào sự việc xảy ra thể hiện được cảm xúc của ng kể

II. Choose the best answer A, B, C or D. 1. My parents usually ............................. work very early. A. go to B. going to C. went D. to go 2. There is a computer ............................. the middle ............................. the room. A. in / of B. in / in C. on / of D. on / in 3. Nam has to leave to tidy his room every day. A. should B. must C. ought to D. need to 4. Nga ............................. have a holiday in Da Lat next summer. A. is going B. will to C. are going to D. is going to 5. Lan isn’t ............................. to go to school today. A. enough well B. enough good C. well enough D. good enough 6. Boys and girls, you’ll have to do this experiment ............................. this afternoon. A. youself B. yourselves C. yourself D. youselves 7. We must put all the small objects such as beads out .................... children’s reach. A. of B. in C. on D. to 8. You are too thin. You ............................. eat much more meat. A. ought B. ought not C. ought to D. ought not to 9. I and my pen friend ............................. Ho Chi Minh’s Mausoleum last Sunday. A. visit B. visited C. visits D. visiting 10. Let us ............................. to the school’s library next Monday. A. going B. to go C. to going D. go

20-(x+1)=46 Lm hộ mk vs ạ hứa 5*+ ctlhn

giúp mình với ạ. mình cần vào ngày mai