Usage of 'think of /think about' in sentences

Fill in the blank: I often ________ my childhood when I visit my hometown.

• think of

• Think about

Choose the correct usage: I can't ________ a good reason for his behavior.

• think about

• think of

Fill in the blank: When I ________ my future, I feel excited and nervous at the same time.

• think about

• think of

Choose the correct usage: She always ________ the consequences before making a decision.

• think of

• thinks about

Choose the correct usage: He needs to ________ a solution to the problem.

• think of

• think about

Choose the correct usage: Did you ________ what I said earlier?

• think about

• think of

Fill in the blank: I often ________ my favorite childhood memories when I feel homesick.

• think of

• think about

Choose the correct usage: She needs to ________ her options before making a decision.

• think of

• think about