Only when you ______ what you have learned to practice ______ say you have made it.
“There is something wrong with my bike.” “It doesn't matter. I ___ lend you mine.”
“You ___ to think for youself , you are to carry out my orders.”
“Do you have any clothes ___ today, Master?” asked the servant politely.
The old professor has such a bad memory that he looks for the watch while he is ___.
---Will you go to the Great Wall with us? ---If John wants to go, ____.