Fill in the blanks based on the dialogue context: Barbie's response to Chelsea's request would fill in the blanks in (Q.9) based on the context of the dialogue.

Chelsea asks for advice on how to prepare for the upcoming test.

Barbie begins by saying, "All I can tell you is to go over the remaining topics covered in your _______ and you should be ready for the next _______." Later, Barbie explicitly states, "As far as I'm concerned, all the questions in the test are based on the textbook." This indicates the source of information. The second blank refers to the event Chelsea is preparing for, which is the test.

Based on the context, the blanks would be filled with "textbook" and "test".

Barbie would have responded:
"All I can tell you is to go over the remaining topics covered in your textbook and you should be ready for the next test."