I:Rewrite the following sentences using "because of"instead of "because"
1.English is learned by millions of students because it is important
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2.We couldn't go out because the weather was not fine
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3.These students arrived late because they had an accident
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4.M.r Baker and M.r Yamamoto can't understand each other because their languages are different
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5.Nick is often punished because he is lazy
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6.These persons live unhappily because they are very poor
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7.All the students love the principal because he is very kind
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II:Rewrite the following sentences using "Because"instead of "Because OF"
1.We respected Mr.Lung because of his honesty
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2.My friend was absent because of his illness
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3.This boy is ignorant because of his laziness
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4.Because of the invention of computers,puplis no longer spend much time in calculating
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5.Because of my friend's absence.I have to coppy the lesson for him.
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6.Our guests aeeived late because of the bad weather.
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7.I catch cold now because of going out in the rain yesterday
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III:Change clauses of concession to phrases:ALTHOUGH//THOUGH <<=>>DESPITE//IN SPITE OF
1.Lam didn't eat much though she was hungry
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2.Trí couldn't solve the problem though he is good at maths
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3.M.r Pike doesn't wear glasses though he is over sixty
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4.Although he had much experience in machinery,he didn't succeed in repairing this machine
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5.Although it got dark ,they continued to work
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6.Although it was noisy ,Chou kept on studying
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7.Although it rained heavily,I went to school on time
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8.The flight was not delayed though it was foggy
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9.Viet ate all the fruits though they were green
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10.We did the test well though it was difficullt
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11.Although he is strong ,I'm not afraid of him
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12.Everybody has great regard for him though he is poor
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13.The plane took off though the weather was bad
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14.He didn't stop his car though the traffic lights turned red
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15.He studies hard though his life was hard at that time
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16.Although the streets are narrow ,many people drive cars in this city
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17.Although his english was good,he wasn't chosen
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18.Although he's got an English name,he is in fact Vietnamese
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19.He awlays studies hard though he encounters difficult
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20.Although the weather is bad ,we are going to have a picnic
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21.Although he had not finished the paper,he went to sleep
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22.She attended the class although she didn't feel alert.
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23.The child ate the cookies even though his mother had told him not to.
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24.She drank coffee to keep herself warm although she disliked it
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25.Mary will takes a plane even though she dislikes flying
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26.Although Tram was sad,she managed to smile
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27.The old woman told interesting stories to the children although her memory was poor.
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28.Though he had been absent frequently ,he was managed tp pass the test
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29.He ate the chocolate cake even though he was on diet
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30.Although the prices are high,my daughters insist on buying a new motorbike
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