... BÀI TẬP BỔ TRỢ TIẾNG ANH 9 UNIT 10 (P1) EXERCISE 181 Change each of the following sentences so as to introduce May. Biến ... could / be / in the bathroom) 3. How do you think the fire started? a. (someone may / drop / a cigarette) b. (it could / be / an electrical fault) 4. I wonder where Abert was going when you saw ... London) I don’t know for sure but 3. Where are you going to hang that picture? (in the dining-room) I haven’t made up my mind yet but 4. When is Tony coming to see us?(tomorrow evening) I’m...