1.（When I got to school）,I realized I had left my backpack a

1.（When I got to school）,I realized I had left my backpack at home 对括号里的提问
_____ ＿＿＿ you _________ you had left your backpack at home?
2.Chinese people invented the abacus in the sixth century
改为被动语态

aifus 1年前已收到4个回答举报

就要开心就好春芽

共回答了15个问题采纳率：86.7% 举报

1 When did realize.
问时间点,用when
2 The abacus was invented by Chinese people in the sixth century.
abacus为单数,用过去式was

1年前

saobatou 幼苗

共回答了308个问题举报

1 when did bealize
2 The abacus was invented by Chinese people in the sixth century.

1年前

zye33333 幼苗

共回答了1个问题举报

1.When did realized
2 The abacus was invented by Chinese people in the sixth century.

1年前

231819828 幼苗

共回答了7个问题举报

问问题要说清楚,第一题一共要几个空?长短不一样什么意思?
2.The abacus was invented by the Chinese people in the sixth century.

1年前

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