Mỗi hỗn hợp gồm 2 chất sau đây có thể tồn tại được hay không.nếu có tồn tại thì hãy cho biết điều kiện,nếu không tồn tại thì giải thích rõ nguyên nhân:a) h2 và o2 b) so2 và no2 c)Na2O2 và h2o d)dd fecl2 và br2 e)dd fecl3 và ki

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I.circle the mistake in each sentences.then correct it 1,it is say that tom is very rich and kind 2,my father has his car wash twice a week 3,she asked me where did i live II,rewrite each of the following sentences so that it has the same meaning as the given one 1,i asked my parents to buy me a bike i have....................................... 2,people think that peter works hard at school it................................................. 3,i am a student,hoa said hoa said that............................................... III,put the verbs in the brackets into the correct tense or form 1,she wishes she (be).................good at playing the piano IV,circle the best answer to complete the sentences: 1,my house.....................in 1986 a,is built b,was building c,was built d,has been built 2,the doctor.............me not to stay up too late at night a, advised b,suggested c,insisted d,forced 3,his house looks very large and beautiful.it is..................house a,a seven-room b,a seven-rooms c,seven room d,seven rooms 4,if you get up early,you................late a,weren't b,wouldn't be c,aren't d,won't be 5,it's very hot today.i wish i.........................on the beach now a, am b,was c,were d,b&c 6,when he lived in the city,he...................to the theater twice a week a, uses to go b,has gone c,used to go d,was going 7,if i were a flower, i....................a sunflower a,was b,were c,will be d,would be 8,it's nearly 3 months....................he visited his parents a, while b,during c,since d,when 9,it.................that learning a foreign language..................a lot of time a,says/is take b,is said/takes c,is saying/has been taken d,was said/was taken GIÚP VỚI AK