He has a talent for fixing things, so he is an excellent mechanic. (Change "a" to "an")

The station building used to be a high wooden structure with a curved roof. (Correct the verb form from "being" to "be" and add an article before "high wooden structure." Also, correct the typo in "roofi" to "roof.")

It is said that the digital camera was invented by him. (Remove "A" before "It said" and rearrange the sentence for clarity.)

We suggest that the number of daily visitors should be limited by the government. (Add "be" after "should" for correct grammar.)

Breakfast is the first meal of the day, so it's very important to eat nutritious things. (Change "importance" to "important.")

If she eats fewer fast food, she can lose weight. (Correct the sentence structure by adding "If" at the beginning and changing "IBA" to "If she." Also, change "cats" to "eats.")