1 be faced with 面临,面对 sb be faced with sth
2 Being exposed to sunlight for too much time是现在分词作主语
3 这题肯定不选C,选A.原句主动语态:We last saw the missing boy playing near the river.
被动语态:The missing boys were last seen playing near the river.
1 be faced with 面临,面对 sb be faced with sth
2 Being exposed to sunlight for too much time是现在分词作主语
3 这题肯定不选C,选A.原句主动语态:We last saw the missing boy playing near the river.
被动语态:The missing boys were last seen playing near the river.