Fill in the Blanks verb practice Online version practice with irregular verbs. by Diana Castro 1 1 . The past form of DO is 2 . the past for of forget is 3 . the participle of sing is 4 . the past form of win is and the participle is 5 . the past form of shine is and the participle is 6 . is the past form of pay 7 . is the participle of sit 8 . the past and participle form of ring is and 9 . the participle of sleep is 10 . is the past form of se e