What a beautiful school!–Yes. Many trees ________ in our school every year.

Oh! I came in a hurry and forgot to bring food. —Never mind. You can have________.

Tom ______ be in his office so late that night. I saw him with his friends in the restaurant .

Unlike the fossil fuels of today, biofuels are renewable sources, which mean that they will not____ easily.

I always look _____ those who never look _____ others, even though they have achieved great achievements.[ ]