His cat-----------(sleep)on the floor when he----------(drop)his cup怎么填啊

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His cat-----------(sleep)on the floor when he----------(drop)his cup怎么填啊

His cat-----------(sleep)on the floor when he----------(drop)his cup怎么填啊
His cat-----------(sleep)on the floor when he----------(drop)his cup怎么填啊

His cat-----------(sleep)on the floor when he----------(drop)his cup怎么填啊
is\was sleeping
drops\dropped
when 这个词在连接两个句子时,一般会出现进行时态;
因为sleep是延续性动词,可以用进行时态;
而drop是短暂性动词,不可用进行时态.
因为没有时态提示,所以现在和过去时态都可以,但是句意上,还是过去时态好一些

is/was sleeping drops/dropped

was sleeping
dropped

was sleeping
dropped

was sleeping
dropped

was sleepping dropped