13. I wonder . A. how much cost these shoes B
13. I wonder .
A. how much cost these shoesB. how much these shoes cost
C. how much do these shoes cost D. how much are these shoes cost
14. I bought a pet yesterday, but I do not know how to it.
A. look afterB. look upC. look forD. look out
15. Daniel is a careful driver, but he drives of my friends.
A. more carefullyB. the most carefully
C. less carefullyD. the least carefully