Answer:
His performing the first successful heart surgery
Explanation:
Well, it's correct. What else do you want me to say?
XD
Answer:
If you don't do schoolwork during the summer, it can damage the rhythm of learning
Explanation:
The answer to the question above is true that the word 'competent' is used correctly in the "it is important to use competent sources when researching" sentence<span>. The word "competent" means a characteristic of acceptable and satisfactory. The sentence above means that it is important to use acceptable sources for a research.</span>
How many words want to make paragraphs?