问题
选择题
| —Peter, could you come and help me in the kitchen, please? —Sorry, Mum. I _____ Lily with her English. |
A. help B. helped C. have helped D. am helping |
答案
答案：D
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| —Peter, could you come and help me in the kitchen, please? —Sorry, Mum. I _____ Lily with her English. |
A. help B. helped C. have helped D. am helping |
答案：D