次の( ) 内の動詞を一方は過去形に, もう一方は過去完形または過去完ず進行形にしな
さい、
21.』 (fnd) the eraser 1 (ose) the day before yesterday.
22. She (know) how to bakke cakes because her mother (teach) her.
23. When 』 (come) home, it was dpk。 Planeteoitoabed。 Em、 まま
28. Mr. Smith (teach) Engish in Japan for ten years until he (go) back to his
hometown.