—Hurry up! The bus is coming.
—Wait a minute. Don’t cross the street _______ the traffic lights are green.
| A．until | B．after | C．while | D．since |
—Hurry up! The bus is coming.
—Wait a minute. Don’t cross the street _______ the traffic lights are green.
| A．until | B．after | C．while | D．since |
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