最後の文訂正笑笑

The box is so heavy that you won't be able to carry it

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Please call me when you arrive at the station.

Both English and French are spoken in Canada．

He knew that she would not come to the party.

The box is very heavy そーyou will not be able to carry it．

Why is he studying English hard?-It is because he will go to America next month.

They don't know I live here.

I didn't understand his word because I was very young．

中2なので合ってないと思いますが…(^^;;

ありがとうございます

確実に言えるのは,,,～時はwhen 、～ならはif 、なぜなら～はbecause 、～しかし～はbut 、～又は(もしくは)～はor ということです！接続詞の前後の文は主語動詞が１つずつあるのが決まりなのでこれを念頭に置いとけば解けると思います