21: Water these plants or they will die. A.If you did not water these plants, they will die B.If you water these plants, they will die. C.If you don’t water these plants, they will die. D. If you a...

21.The sentence that best rephrases “Water these plants or they will die.” is C. If you don’t water these plants, they will die. This sentence correctly implies that if the plants are not watered, they will die.
22.The sentence that best rephrases “Where is Lan? Perhaps she is working.” is A. She may be working. This sentence correctly conveys the possibility that Lan could be working.