Choose the sentences that is closest in the meaning to the root sentence or best combines the two given sentences

Choose the sentences (A, B, C or D) that is closest in the meaning to the root sentence or best combines the two given sentences.
46. It usually takes me two hours to do my homework.
A. I usually spend two hours to do my homework.
B. Doing my homework needs me two hours.
C. Two hours is the time I need to do my homework.
D. Two hours are enough for me to do my homework.
47. Staying at home alone scares me.
A. I am used to staying at home alone.
B. I find staying at home alone scary.
C. I don’t like staying at home alone.
D. Staying at home alone causes me no fear.
48. My brother has a lot of strange stickers in his collection.
A. There are a lot of strange stickers in my brother’s collection.
B. My brother has a strange collection of stickers.
C. My brother often asks people for strange stickers to put in his collection.
D. My brother has the strangest stickers I’ve ever seen in his collection.
49. This math exercise is too difficult for me to solve.
A. I have no difficulty solving this math exercise.
B. This math exercise is difficult enough for me to solve.
C. This math exercise is easy enough for me to solve it.
D. This math exercise isn’t easy enough for me to solve.