.The other day I was showing the boys the weekly chemistry experiment when, ________ I knew it, the mixture was bubbling over everywhere.
—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 .