I ( ) my homework,and my parents came home.A do B did C am doing D was doing

问题描述:

I ( ) my homework,and my parents came home.A do B did C am doing D was doing

B do 的过去式是 did

应该选B,did
这就是个一般陈述句,没那么复杂.

I (D was doing ) my homework,and my parents came home.
因为後面是came ,过去式,所以用过去进行时

I ( ) my homework,and my parents came home
我正在做我的家庭作业时,我父母回来了.
选D was doing.
1.后句用的是一般过去式,前面相应用一般过去式,排除A,C.
2.这里要表达的是正在做一某件事时,另一件事发生了.所以用进行时,排除A do