9. Be sure to put out the fire before you leave.
3. extend
4. extinguish
1. explain
2. express
10. Did the union take part in the demonstration?
1. lie in
2. major in
3. participate in
4. result in
11. I knew at once they were disappointed.
M
1. carefully
2.gradually
3. immediately
4. permanently
12. He got 50 percent in the math examn. To put it another way, he failed it.
1. At any rate
2. By accident
3. In other words
4. On the whole
