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

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I()myhomework,andmyparentscamehome.AdoBdidCamdoingDwasdoingI()myhomework,andmyparentscamehome.AdoBdi

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

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

应该选B,did
这就是个一般陈述句,没那么复杂.

B do 的过去式是 did

I spent half an hour ___(finish) my homework. I spent half an hour in doing my homework I finished my homework an hour ago(改为现在完成时) I need h____ an hour to do my homework I spent half an hour on my homework yesterday.（保持原意l ( )half an hour ( )my homework skirt. it takes me half an hour to do my homework.i------ half an hour ------my homework.如题 I spend an hour in doing my homework.同义句（____ ____ me an hour ____ ___ my homework.） 英语改同意句同意句I do my homework for half an hourI --- an hour---my homework I have my homework I did my homework It takes me half an hour to do my homework.I ______ half an hour _______ _______my homework.(同义句) It takes me an hour to do my homework every day(同义句转换) I ＿ an hour ＿ my homework every day my,do,too,i,homework(.,) I（ ）[do]my homework when I finish () my homework I will finish my homework in an hour （特殊疑问句） I spent half an hour on my homework yesterday.（保持原意） i did my homework at an hour yesterday evening怎么错了?