A survey of the opinions of scientists _____ that three hours of outdoor exercise a week _____
good for our health.
| A．show; are | B．shows; is | C．show; is | D．shows; are |
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A survey of the opinions of scientists _____ that three hours of outdoor exercise a week _____
good for our health.
| A．show; are | B．shows; is | C．show; is | D．shows; are |
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