Betty is often seen ( )the old man with his housework...A.help B.to help C.helped D.helps 选哪个说明原因

- i saw betty go to Grandpa Zhang's home just now - yes ,she is often seen __the old man with hishis 后面是housework 回答具体些 Betty is often seen ( )the old man with his housework...A.help B.to help C.helped D.helps 选哪个说明原因 1.The missing boy was last seen ____by the lake.答案是playing2.Betty is often seen _______the old man with his housework.A.help B.to help C.helped D.helps答案选的是b老师的解释是：当使役动词和感官动词变为被动语态时,不 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 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. 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. john is often seen (help) the old man with his housework He is often seen to dance in his room改被动语态 She is often seen to dance under the big tree 是什么时态? 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____ _______.