Ex4 ; change the following sentences into the passive voice 1. People feed cows in Ba Vi Cows.................... . . .. .. . . . . 2. People built these hospitals during the war time These. .... .. . . . . .. . . .. . . . .. . .. . . . . . . . .. . . 3. Lien made a new skirt yesterday. A new s....... .. . . . . . .. . . . .. .. . . . . . 4. People are planting flowers in Da Lat Flowers............ . . . . .. . . .. . . . . . . .. . . . . . 5.Mr Bao has just planted some fruit trees Some fruit trees.... . . . . .. . .. . . . . . . . . .. . . Ex9 : give the correct form of the verbs in brackets 1. I...........Ha Long Bay next summer .( visit) 2. They ............a new car next month (buy) 3. .......you .......to the seaside tomrrow ?(go) 4. Mr Cuong .......more trees next sping ( not plant)