1. Seeming to be the only organization fighting for the rights of poor people in the South, Hosea Hudson, a laborer in Alabama, joined the Communist party in 1931.
“If the adjective is a classifying adjective, you usually use seem to be. For example, you say' He seemed to be alone', you don't say ' He seemed alone'. ”
“If the none group contains a determiner but not a adjective, you must use seem to be. For example, you say' He seemed to be the owner of the car'. You do not say' He seemed the owner of the car'."