You can use the one the left. Can't you see? (填介词)

题型：语法填空（单句）题类：常考题难易度：普通

牛津上海版（试用本）2018-2019学年小学英语六年级上册Module 2 Places and activities Unit 7 Rules around us Exercise 3

举一反三

—Yes, go ahead.

{#blank#}1{#/blank#} {#blank#}2{#/blank#} on the grass.

—________. You can hand in tomorrow morning.

We must {#blank#}1{#/blank#} when we {#blank#}2{#/blank#}.

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