Many experts have realized that the current medical system needs ________ to meet the needs of ourincreasingly aging population. [ ]

A special and delicious record was set in 1997 to ______ Hong Kong’s return to China.

I miss my parents very much. I’m seeing them again.

______ Flying Luxury Hotel of Tomorrow is ______ huge 400-ton aircraftwithout wings.

I don’t know ____ everyone in my class thinks I’m funny.