Answer key: TOEFL iBT · Build a Sentence · Writing center and library research

For the teacher. Each answer comes with the reason it is right.

1. 1. I'm not sure which citation style I should use for this paper.

   Extra chunk, not used: do

2. 2. Yes, it is considered to be the best one for primary documents.

   Extra chunk, not used: considering

3. 3. It's from the article that we talked about in class.

   Extra chunk, not used: it

4. 4. Yes, as long as you keep it on silent.

   Extra chunk, not used: will

5. 5. isn't it a bit risky to leave it so late?

   Extra chunk, not used: doesn't

6. 6. You might have left it in one of the computer labs.

   Extra chunk, not used: leaving

7. 7. Not yet. I'm still trying to come up with one.

   Extra chunk, not used: for

8. 8. She wanted to know why I had used only three sources.

   Extra chunk, not used: did I

9. 9. Actually, it's a little slower than the old one, but it finds more sources.

   Extra chunk, not used: more

10. 10. Not until I got my paper back did I notice the mistakes.

    Extra chunk, not used: noticed