题文
Could you tell me _______？
I'm not sure． Maybe this weekend．（ ）
| A． |
how we'll clean up the city park |
| B． |
where shall we clean up the city |
| C． |
when we'll clean up the city park |
Could you tell me _______？
I'm not sure． Maybe this weekend．（ ）
| A． |
how we'll clean up the city park |
| B． |
where shall we clean up the city |
| C． |
when we'll clean up the city park |
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