The talented boy _________ write lyrics when he was at the age of ten. A. may B. could C. must
--Remember this, boys and girls. _____careful you are, _____mistakes you will make. ---We know, Miss Wang.
_____trees are planted in our city every year.
You'd better not read today's newspaper because there is _____in it.
You made many mistakes in your English exams. What will you ___them?
This kind of animals has nearly _____ because their homelands are gone.