the classes fall into a separate category.fall into怎么翻译理解

the classes fall into a separate category.fall into怎么翻译理解 Humans fall into two classes.意思 Many students have ( ) asleep during the classes at one time or another. ( fall )使用 fall 的适当形式填空. 请再帮忙解释一下时态. classes begin可不可以写成 begin the classes take the classes There_____three classes in the afternoon. The leave fall and fall.中文意思 the people fall in fall down into the fall in the test take the fall for fall to the fall off the fall onto the fall the ball fall on the ice The fall semester fall of the