câu 1 : Rewrite the following sentences so that the second sentence means the same as the first 1. Scientists have invented new devices to help people live a longer life New devices ................ 2. I don't have enough time , so I can't go on holiday this summer If ...................... 3. The man had a broken leg. He tried to save his wife In spie of................... 4. I can't tell you because I don't know the answer If ......................... 5. They will do the test well. They will review them all hard If .........................

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