There is ONE mistake in each of the following sentences. Find and correct them

Ex3. There is ONE mistake in each of the following sentences. Find and correct them.
1. The sick needs to be looked after. So money must be spent on hospitals.
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2. The accident looked seriously at first but nobody was injured.
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3. All the students are looking forward to spending their free time to enjoy their Tet holiday.
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4. My family lived in Hue since 1990 to 1996, but we are now living in Sai Gon.
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5. Her well-known film, that won several awards, was about the life of Lenin.
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