let him think还是thinks?

let him think还是thinks? I think he 还是i think him 为什么 let's think it 还是let's think about it 为什么 because i think him very scary还是i think him is scary是对的? think of him as Let us_____(think) about it think about 与think of 有何区别Tom's father is helping him ____ a chinese name.A.think B.think out C.think about D.think of 选 C 还是D?能说说原因吗> Think Think think think think think think think think think think