Look and choose（看一看, 选一选, 只填序号）
What happened your head?A in B to C at
I ten then. Now I 13.A am was B was am C were am
One day robots will do everything.A一天 B总有一天 C过去一天
Did you ______ a watermelon yesterday? A had B buy C bought
Yesterday, Amy ______her mum cook. A helped B will help C is helping
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