The lecturer______his explanation with some tape recordings.

单项选择题This is a very big hotel and it can ______more than 1,000 people.(2011年南京师范大学考博试题)

单项选择题In his view, though Hong Kong has no direct cultural identity, local art is thriving by being ______ being open to all kinds of art.(2002年3月中国科学院考博试题)