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. I'm not sure which citation style I should use for this paper.
Extra chunk, not used: do
2. Yes, it is considered to be the best one for primary documents.
Extra chunk, not used: considering
3. It's from the article that we talked about in class.
Extra chunk, not used: it
4. Yes, as long as you keep it on silent.
Extra chunk, not used: will
5. isn't it a bit risky to leave it so late?
Extra chunk, not used: doesn't
6. You might have left it in one of the computer labs.
Extra chunk, not used: leaving
7. Not yet. I'm still trying to come up with one.
Extra chunk, not used: for
8. She wanted to know why I had used only three sources.
Extra chunk, not used: did I
9. Actually, it's a little slower than the old one, but it finds more sources.
Extra chunk, not used: more
10. Not until I got my paper back did I notice the mistakes.
Extra chunk, not used: noticed