Can $ 500 _________ the cost of the whole trip

If no one ______ a coat with red buttons on it,I’ll have to keep it or send it to the Lost and Found.

Emma failed her exams. I think she should work harder.— I agree. _____ she does, she’ll get good grades.

One can’t do extreme sports _________ he or she hashad some training

My father is a teacher. He is always strict ____ his students.