1) She is riding a bike. a) b) 2) He is driving a car. a) b) 3) They are going by bus. a) b) 4) This is a space shuttle. a) b) 5) He is driving a truck. a) b) 6) He is riding a motorbike. a) b) 7) I see a big submarine. a) b) 8) They are going by helicopter. a) b)

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