问题描述:
...
最佳答案:
1.(Is )your sister ( doing)her homework?
(Has )your sister ( done)her homework?
(Did )your sister ( do)her homework?
(Will)your sister ( do)her homework?
2.Let's ( do) our homework now.
问题描述:
...
1.(Is )your sister ( doing)her homework?
(Has )your sister ( done)her homework?
(Did )your sister ( do)her homework?
(Will)your sister ( do)her homework?
2.Let's ( do) our homework now.