Question

【题目】We are discussing which colour __________ (paint) the walls. Could you offer some advice?

Answer 1

【答案】to paint

【解析】

句意：我们正在讨论把墙漆成什么颜色。你能给我一些建议吗？

考查动词不定式。这里用疑问词+不定式的简单句形式，做宾语。故答案为：to paint。