82 It took Mr. Hoang half an hour to walk to work to yesterday. -> Mr. Hoang spent 83 What is the price of this cap ? -> How much ? 84 Lan's hair is long. -> Lan 85 Nam rides his bike to school everyday. ->Nam 86 Nobody in our class is more intelligent than Nga. -> Nga 87 Let's go swimming. -> Shall ? 88 When is your brithday? -> What ? 89 How tall is this building? -> What ? 90 Miss Lan is a good English teacher. -> Miss Lan 91 Our house is older than any other house in the living centre -> Our