The world’s population is getting larger and larger, so scientists will have to ______ new ways to solve food problem.
— we’ve been trying hard, but can’t solve the problem —I think you can ____it in another way
— It will be my turn, I feel a little nervous. —_________. You can make it!
Your parents will you if you study hard and get good grades at school.
I_____ to school by bike, but now I ______.
___ the teachers in their school is about 200 and one fourth of them are ____ teachers.