✨ คำตอบที่ดีที่สุด ✨
〇I found astonishing (that) the girl can run very fast.
→ I(S) found(V:※過去形) it(O:形式目的語) astonishing(C) <that the girl could(※過去形) run very fast>(真目的語). ※時制の一致
〇I had been practicing soccer When my mother called me.→ I had been practicing soccer when my mother called me.
○world cop is being held in Japan now.→ The World Cup is being held in Japan now. ワールドカップは今日本で開催されている。
参考にしてください。