1. I haven't decided what ________ (write) about.
2. I often hear him________ (sing) in the next room.
3. I find it easy _______ (work) out the difficult problem.
4. It is too dark to see the blackboard________ (clear). you had better turn on the light.
5. — Where is Bob?do you know? — Oh, he                (go) to the post office.
6. The teacher is ________ (please) with what we have done in class.
7. Tom ran so ________ (quick) that I couldn't catch up with him.

1. How ________ (heavy) it is snowing! He felt now ________ (alone).
2. The village was ________ (sleep) and quiet, but he sat deep in ________. (think)
3. I often hear him ________ (sing) in the next room.
4. Do you know the way ________ (write) a limerick?
5. This kind poem ________ (create) by an American poet in the nineteenth century.