mấy anh chị giúp em với ạ

1. The answer is "hard" because learning to ride a bike typically presents numerous challenges, particularly for children who are just beginning to grasp balance and coordination.

2. The answer is "to" as it completes the infinitive verb structure "to ride."

3. The answer is "bike" as it is the noun referring to the bicycle that Anna is learning to ride.

4. The answer is "scary" to express Anna's feelings of fear when she first attempted to ride.

5. The answer is "kept" because it indicates the continuous action of losing balance during the attempts at riding.

6. The answer is "My father" who encouraged Anna during her learning experience.

7. The answer is "proud" to express how Anna felt about her accomplishment after learning to ride.

8. The answer is "happy" as it reflects Anna's emotions after successfully learning to ride the bike.

9. The answer is "one" to indicate Anna's father as the only person cheering for her during this experience.