In order to work better in the future, each of us must first of all know our ______ and weaknesses.
If you don’t wait _______ the red light, you will be punished by the policeman.
________ doesn’t seem to have been much difficulty in solving the problem.
It is fairly common in Africa for there______ a group of expert musicians surrounded by others who also join in the performances.
I_____ violin lessons every two weeks, but I think I ‘ll make it every week from next month.
----- Which share is meant for me ? ----- You can take _____ half. They are exactly the same.