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2 năm trước
phân biệt các chất : Na , CaCO3, Na2O, P2O5 , Al , MgO. viết các PTHH. các bạn giúp mình với
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I. Complete each sentence with a word below. who ■ whose ■ when ■ where ■ which 6. Our friends, _______ advice we sought, were very helpful. 7. It was there that he met Mary _____ is now his wife. 8. The treaty, _____ was signed yesterday, is an excellent one. 9. His father, __________ works very hard, has just bouht this house. 10. Yesterday I met Harry, __________ works nearby. 11. John, __________ is my younger brother, went to do the shopping. 12. His work, __________ is very difficult, exhausted him. 13. Tom, __________ mother is French, speaks the language very well. 14. Mr Smith, __________ I was talking to, is a carpenter. 15. Your problem, __________ I have thought about a lot, is a difficult one. IV. Reduced Relative clause: 1/ The people who are crossing the street are trying to get a better view.  ……………………………………………………….……………… 2/ Some employees who have to work late will be provided with taxis.  ……………………………………………………….……………… 3/ We are concerned about the people who are held in prison without a trial.  ……………………………………………………….……………… 4/ All the candidates who were selected were given a second interview.  ……………………………………………………….……………… 5/ Anyone who drive speed limit will be stopped.  …………………………………..……………………………….……………… 6/ The couple who are talking to Sue are from Germany.  …………………………………….………………………………….……………… 7/ I really want to visit Paris, which is the capital of France.  ……………………………………….……………………………….……………… 8/ George is the man who was chosen to represent the committee at the convention.  ………………………………………………..…………………………….……………… 9/ Any employee that works hard can receive a bonus this month  ……………………………………….………………………………….……………… 10/ The man who was brought to the police station confessed to the crime.  …………………………………………………………………………….……………… 11/ He was the only candidate who was chosen for the position.  …………………………………………………………………………….……………… 12/ Jane was the first person that knew the truth.  …………………………………………………………………………….………………

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