[مستر محمد ديوشي عطا]

16- Scientists can now calculate the age of a tree without the tree ( is cut – cutting – cuts – being cut) down
17- My elder brother is a teacher. He works (in school – in the school – at school – in a school) in Alexandria
18- What sort of person is your uncle? Is he (like – looks like – alike – likes) your father
19- She said she couldn't agree more, which means she ( completely refuses – might not agree – strongly agrees – might refuse)
20- Before long, many people ( are using – use – are going to use – will have used) e-readers