信 [分詞の識別〕 次の各組の( ⑰ ⑫ ⑲ | ⑮ ョ. b a b a b. a b a b THave you ever heard this song (sing) in Englsh ? Theard him (come) slowly up the stairs。 Newspapers will keep you (inform) of world affairs。 Tm sorry to have kept you (wait) so long. Tsaw Mary (walk) down the street Tsaw her (surround) by the children. The police found the money (hide) in the garage. You wil find him (lie) on the bed. You should not leave your baby (cry) for a long time. You had better not eave the back door (unlock)、 )内の動詞のどちらか一方を現在分詞に, 他方を過去分詞にかえよ。