Tian helped her mother cook the dinner yesterday evening.cook为什么不要加ing

Tian helped her mother cook the dinner yesterday evening.cook为什么不要加ing Last weekend,I helped Mary ____ her math. 英语she helped her mother yesterday 【变否定句】 I helped the little girl _____ her penfind,finds,found. Nancy went to helped her grandma last Sunday(改错） Linda helped her sister ______（make） a kite my sister her finger when she helped mom cook dinner. I helped him to find her Father改为同一句 Cindy helped her mother clean the room last night.用helped her mother clean the room提问? She helped her mother do the cooking last night.对helped her mother do the cooking 提问 her study of their body language helped her work out their.. 中 her study I prefer tian zhen .she can weite her own songs(合并成一个句子)i prefer Tian zhen__ __ （两个词）write her own songs she not only finished her homework but also helped her mather do some housework She helped ---(her) with some cakes after her aunt went away. she helped her mother with the housework.she _____ her mother ___ the housework. one morning .she tidied her room .she washed the dishes and helped her mom. tian kong Last weekend Mary _______ her mother in the kitchen.A helped B helps C helping