Tìm các giá trị nguyên của a và b sao cho a/9+-3/5=1/18

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VI. Choose the best answer to complete each sentence. 101. Some high school students take part in ……the handicapped. A. helping ​B. to help ​C. help ​D. being help 102. The mission of this society is …………community education for street children. A. to provide​ ​B. provide​C. providing​ ​D. provided 103. Shy people often find it ........................ to take part in group discussions. A. difficult​B. difficulty​C. difficultly ​D. be difficult 104. I am unable.................... to the meeting on Monday evening, please apologise for my absence. A. to come ​B. come ​C. coming ​D. to be come 105. ....................... it several times, he didn’t want to read it once again. A. Reading​B. To read​C. To have read ​D. Having read 106. ......................... that he was poor, I offered to pay his fare. A. Knowing​B. Known ​C. Knew​ D. Having knew 107. ....................... photographs of the place, I had no desire to go there. A. Seeing​B. Seen​ ​C. Saw​ ​D. Having seen 108. I hate ....................... a child ........................ . A. see/ crying​B. see/ cry​C. seeing/ to cry D. seeing/ cry 109. I notice the lorry ........................ down the hill. A. to come​B. came​C. coming​ ​D. having come 110. I observed a blue car ...................... very fast towards the motorway. A. having driven​B. driven​C. driving ​D. to drive 111. They left the restaurant, ......................... two hours over lunch. A. spending​B. spent​C. after spend ​D. having spent 112. The police accused him of..................... fire to the building but he denied ....................... in the area on the night of the fire. A. setting/ being​B. setting/ having been​C. set/ be​D. having set/ having been 113. Someone told us ........................... sit on the stairs. A. don’t B. not C. not to​ D. to not Giúp mình nha