I ………………….. (do) an exercise on the present tenses at this moment and I (think) that I ……………….. (know) how to use it now

6. I ………………….. (do) an exercise on the present tenses at this moment and I (think) that I ……………….. (know) how to use it now.
7. My mother sometimes ……………….. (buy) vegetables at this market.
8. It ………………….. (be) very cold now.
9. It ……………….. (rain) much in summer. It……………………. (rain) now.
10. Daisy ……………………….. (cook) some food in the kitchen at present. She always ……………………(cook) in the morning.