求解答Betty is often seen( )the old man with his housework.这个题A.help B.to help C.heiped D.helps我知道这个题选B,但是不知道为什么,是不是跟被动语态有关系.那个to为什么要加上.还有其它选项为什么不选.

求解答Betty is often seen( )the old man with his housework.这个题A.help B.to help C.heiped D.helps我知道这个题选B,但是不知道为什么,是不是跟被动语态有关系.那个to为什么要加上.还有其它选项为什么不选. Betty often studys before breakfast. Betty is a good friend of (m________).We often help each other. Betty is often seen___(help)the old man with his housework. Betty is often seen___ (heip) the old man with his housework is betty little Betty is often seen___(help)the old man with his housework.答案为什么是to help啊?helping行不行? Children's _______(expect)ideas often surprise the adults.填什么?Betty is often seen_____(help)the old man with his housework. 九年级一个英语改错题求解答Exercise often is good for your health.指明原因啊 Betty her is name first Is betty a little girl? is betty a little grile Betty is American.(变为同义句) 格式：Betty is____ _______. 对划线部分提问：My name is Betty.（Betty） Betty is not at home now.用Betty提问? betty 求Betty 意思和发音 ______name is John Brown A.Betty's father B.Betty's fathers' C.Betty father's D.Betty's father's______name is John BrownA.Betty's father B.Betty's fathers' C.Betty father's D.Betty's father's