Giúp em với ạ 91. One/ disadvantages / living in the countryside / lack / public transport. .............................................................................................. 92. I / always / keep / window / open / order / let / fresh air / in. .............................................................................................. 93. How long / you / leam English? .............................................................................................. 94. Homework / must / be / hand / before / end / the week. .............................................................................................. 95. These exercises / too difficult / students / do / without / mistakes. .............................................................................................. 96. One / my classmates / always / play / computer games. .............................................................................................. 97. Our accommodation / include / ticket price. .............................................................................................. 98. Some / the goods /at the new stores / will be / same / ones / at the small shop. .............................................................................................. 99. People / throw / away / billions / cans / every year. .............................................................................................. 100. The tiger / ask / the farmer / why / strong buffalo / his servant and / he / master. ..............................................................................................