When I was a child, I used to ___________ chocolate.

David， is that man your Chinese teacher— It ___________ be him. He’s having a meeting.

下列各句中，没有语病的一句是

Somehow this seems to me to be _______How could a team that had fought for Canada before suddenly become citizens of the USA?

If I were you, I would take it easy; _____ is no need to be nervous [ ]