Question 1:
How much beef does she want?
We use "How much" to ask about quantity of uncountable nouns like beef.
Question 2:
She worked very hard, so she passed all her exams.
The word "so" connects two clauses, indicating a result.
Question 3:
Your bag is different from her bag.
The preposition "from" is used to compare two things.
Question 4:
I visited Nha Trang when I was a child.
The past simple tense is used to describe a completed action in the past.
Question 5:
Hue beef noodle is really delicious. I like it a lot.
"Delicious" is the best word to describe the taste of food.
Question 6:
Her son wants to become a well-known actor.
"Actor" is the correct word for a male person who acts in plays, films, or television programs.
Question 7:
There is some tofu, but there aren't any sandwiches.
"Some" is used with countable nouns in affirmative sentences, and "any" is used with countable nouns in negative sentences.
Question 8:
Dan Bau is a traditional musical instrument in Viet Nam.
"Traditional" means something that has existed for a long time and is part of a culture.