Question

He ---(do)his homework every day.But he--(not do)it yesterday.

Answer 1

答案：does, didn't do
解析：第一个空是一般现在时，表示经常性的动作，主语是第三人称单数，所以谓语动词也要用单三形式；第二个空是一般过去时，用动词过去式的否定形式didn't do
翻译：他每天都做作业，但是昨天他没有做作业。

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有不明白的请继续追问(*^__^*)

追问

What--Tom--(do)on Saturday eveving?He--(watch)TV and ---(read)an interesting book.
They --(be)on the farm a moment ago. I --(see)Li Lei--(go)out just now.

追答

1. does, do, watches, reads

2. were, saw, go

追问

What--Tom--(do)on Saturday eveving?He--(watch)TV and ---(read)an interesting book.
They --(be)on the farm a moment ago. I --(see)Li Lei--(go)out just now.

追答

What does Tom do (do)on Saturday eveving?He watches (watch)TV and reads (read)an interesting book.
They were (be)on the farm a moment ago. I saw (see)Li Lei go (go)out just now.

追问

Frank read an interesting book about history.(改为一般疑问句)()Fank()an interesting book about history.

追答

( Did ) Fank ( read ) an interesting book about history?

追问

He cleaned his room yesterday.(对划线部分提问)cleaned his room是划线部分()()he ()yesterday?

追答

( What ) ( did ) he ( do ) yesterday? 他昨天做什么了?

Answer 2

does经常性的用一般现在时
didn't do过去时间标志的用过去时

Answer 3

does;didn't