—How much is too much for a schoolbag?
—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
| A．no | B．not | C．any | D．far |
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—How much is too much for a schoolbag?
—Experts say students should carry_______ more than 10 or 15 percent of their body weight.
| A．no | B．not | C．any | D．far |
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