1. —Will John attend the meeting tomorrow?
—______ If he should come tomorrow, he would have called me.
A. Go ahead.
C. That's right.
D. I don't think so.
2. If you want to change for a double room, you'll have to pay _____ $25.
3. Plastic takes hundreds of years to _____ and, as it does so, poisonous materials are released into the water and soil.
A. knock out
B. turn away
C. come up
D. break down
4. More than one thousand high school students practised yoga on the school grounds to relieve ______ of the coming exam.