单选题
1.「2005.10」The people on the third floor seem ___ a party. You can hear them laughing and shouting.
A.to have
B.to be having
C.to have had
D.being had
正确答案:B
答案解析:seem的用法是seem to do或seem+从句。seem doing sth不正确,所以D答案是错误的。根据句意可知这是正在发生的动作,所以B为正确答案。