题文
—Henry，________the light is ________when you leave the lab.
—All right.
| A．be sure；turned on |
| B．make sure；turned off |
| C．sure；turning off |
| D．make sure；turning off |
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—Henry，________the light is ________when you leave the lab.
—All right.
| A．be sure；turned on |
| B．make sure；turned off |
| C．sure；turning off |
| D．make sure；turning off |
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