Read and choose the correct question. 根据提供的答语,选择与其相对应的问句。
1. — ?
—They are having a party.
A.What do they do
B.What does he do
C.What are they doing
2. — ?
—Ben went to Guangzhou yesterday.
A.What did Ben do yesterday
B.What does Ben do
C.What is Ben doing
3. — ?
—I'm ten years old.
A.How are you
B.How old are you
C.What is your name
4. — ?
—Yes, I like Beijing very much.
A.What are you doing in Beijing
B.Why do you like Beijing
C.Do you like Beijing
5. — ?
—I came to school on Monday.
A.When do you come to school
B.When did you come to school
C.When did you go to school