Irradiated food has to be labeled when_________.A

______ has not yet been decided.A、When to hold the meetingB、When is held the meetingC、Wh

The meeting _____when Mr. Wang _____to school.A、has begun; getB、has been on; getC、had b

When William hurried home, he found that his mother ____already ____to hospital.A、has

________ when you cross the road.A、Do careB、CareC、Do be carefulD、To be careful

He cannot be tired _______ he has walked only half a mile. A：since B：whether C：when

Ann has a fine reputation for being an old hand ______ cooking Italian food.A. onB. a