exercise 3. make the sentences negative and interrogative.
1) this hotel is constructed by a famous architect. 2) this fort is forgotten. 3) students are taught in
colleges. 4) airplanes are flown by pilots. 5) rumours are spread quickly. 6) oil is made of seeds.
7) breakfast is served at 8 o'clock. 8) cars are repaired at service centres. 9) this vase is made of
glass. 10) this excursion is often chosen by tourists.

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