Having ________ every night is very important for your health.
| A．a good amount of sleeps | B．a number of sleep |
| C．a good amount of sleep | D．a great deal of sleeps |
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Having ________ every night is very important for your health.
| A．a good amount of sleeps | B．a number of sleep |
| C．a good amount of sleep | D．a great deal of sleeps |
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