Bài tập 16: Hoàn thành đoạn văn sau bằng cách chia dạng từ và sử dụng trạng từ thích hợp: I ... (have) a little sister, and I... (love) her very much. She ... (to be) 6 years old, and she - (like) to ... (follow) me everywhere. Whenever I ... (come) home from school, she ...(rarely / always / randomly) greet me by calling my name out loud. She ... (to be) a good girl, but .... (never / usually /sometimes) she can also ... (to be) a very naughty child. She ... (have) to be in my eyesight so she ... (do not) break anything. My mother ... (give) me a mission to ... (look) after her when I ... (have) free time, and we never / sometimes) play video games together. I also... (teach) her how to write, and she ... (learn) everything very quickly. We ... (to be) like best friends, and she is ... (never / usually / always) my little sister.