單選題1.[2005.10]The people on the third floor seem___a can hear them laughing and shouting. have be having have hadg had正確答案:B答案解析:本題考查固定詞組。seem的用法是seem to do或seem+從句。seem doing sth不正確,所以D答案是錯誤的。根據句意可知這是正在發生的動作,所以B爲正確答案。