It is difficult for any of us to eat better, exercise more, and sleep enough, ______ we know we should.
—Where are we going for the National Day,the mountains or the sea? —Either will be fine with me.
You are driving too fast. Can you drive_________?
American is an ________ country. You can hear _______ every where.
Mary realized she ________.
----How did you find the party ? ----Perfect ! It ______ very well .