Can $ 500 _________ the cost of the whole trip

at the forest was destroyed by a bigfire, a large ________of trees ______ to be planted on the mountain．

Everyone in my class passed the exam.—Oh, really? It ________ difficult.

Life is full of opportunities for you.—That’s right. _____ .

Many a student________selected to take part in the English competition，and more than one teacher________them on speaking and writing.