identify the bold subordinate clauses as noun, adverbial or relative.

1. when Olivia returned from her week long summer vacation all her flowers had wilted

2. Joe's parents will be happy with whatever college he chooses to attend.

3. did you know that halley's comet appears once every seventy six years

4. the Chinese conversation classes that I took in college have proven to be very beneficial.

5. although you protest I will not change my mind.

6. the student who graduated as valedictorian has a reputation of putting forth her best effort in all her activities ​