They planned _to see Grandpa Li _ the next week.(对画线部分提问) __ __ they __ __ __ the next week?

题目

They planned _to see Grandpa Li _ the next week.(对画线部分提问) __ __ they __ __ __ the next week?

答案

正确答案为：
= (What did) they (plan to do) the next weekend?
第二个周末他们计划做什么?
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