____-2=____
It's six o'clock in the afternoon. It's time for 1！Jenny and Li Ming are2. Jenny's mother is 3 in the kitchen. Jenny and Li Ming help Mrs. Smith 4 the vegetables. After dinner, Mrs. Smith washes the 5 dishes. Li Ming dries the dishes.
下面句子中划线词语没有结合语境解释的一项是（ ）
