Circle the correct preposition in these sentences. 1. they are in / on vacation now. 2. why is she speaking on / in such a serious tone? 3. keep aside, please, and don’t get in / on my way. 4. we bought the house on / at a reasonable price. 5. he was looking in / into my eyes trying to convince me of / about his honesty. 6. why does she insist so much on / at buying the book if she is not interested about / in reading it?