1.— What time did you finish your homework yesterday?
— ______ seven o’clock ______ the afternoon.
A.On ; in B.At ; on C.At ; in D.On ; at
2.Japan lies ______ the east of Asia.
A.in B.on C.at D.to
3.It was in 1949 ______ the People’s Republic of China was founded.
A.when B.that C.in which D.which