1) c. and d. because they both describe when and to what extent.
2) a. and d. because these describe to what extent and how.
3) b. because it describes to what extent
4) d. because it describes when.
5)
Answer:
I believe it to be Improve
Explanation:
I hope this helps, sorry if it doesn't!
Answer: She showed little interest in the club until she met some of its members.
Explanation: