Bob ________to Harbin for a meeting yesterday.

A moment, please．I’m checking if Mr. Smith _________ free tomorrow．

Everybody talks about the taste of great food, but hardly _________ about the tongue and the nose that make the tasting possible.

When I was a boy, I often ______ to play in that park.

Dad, _____ is my friend , Xiao Hua. –Hello, Xiao Hua.