Answer:
I graduated last year. (One clause sentence)
When I came here, I saw him. (Two clause sentence)
When I came here, I saw him, and he greeted me. (Three clause sentence)
I want to buy a phone, but I don’t have enough money. (Two independent clauses)
He went to London and visited the Lords. (Subject of the second clause is ‘he,' so “he visited the Lords” is an independent clause.)
l know the man who stole the watch.
He bought a car which was too expensive.
I know that he cannot do it.
He does not know where he was born.
IYou prefer flying but she always wants to take a bus
Explanation: These are different types of clauses