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✨ ベストアンサー ✨

(1) (It) (was) (difficult) (for) (him) to solve this problem. <形式主語>
(2) It (is said) (that) he (invented (this) (machine). <形式主語>
(3) (Would) (you) (like) (to) (join) our basketball team? ※Would you like to ~? ~しませんか<勧誘>
(4) The boy(S1) <(I)(S2) (met)(V2) (yesterday)> (wanted)(V1) (to be) a teacher(O1).
(5) The man (left) (the company) in the morning, (never) (to) (return).

参考にしてください。

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