Answer:
1. He must have just triped or accidentally hit her.
2. I should go aplagize to my parents.
3. He may have changed scince i last saw him.
4. She might be in trouble.
5. I can't understand what the teacher is teaching.
6. He might flake on us again.
Explanation:
The last one, Before his European travel- the highlight of his summer-... ect.
is the right answer
Hi,
I believe it's B, "<span>The thermostat, which controls the temperature in the house, broke last night."
~Elisabeth</span>
Answer: C. Girls and boys are equally intelligent and able.
Hope that helps you :)