1—______ do you send ane-mail to your cousin— Sometimes.

What do you think of BeijingOpera —-.

s and teachers always think students should spend more time on their studies, but students themselves think _____.

John and I _____ friends for eightyears. We first got to know each other at a Christmas party. But we _____ eachother a couple of times before that.

Is this key ________–No, it isn’t. It’s ___________.