Fill in the gap..... 
1.which
2.who
3.whom
4.which
5.which
6.whose
7.which
8.whose
9.whom
10.which
Choose the underlined... 
1.whom -> whose
2.which -> whom
3. Giống 1
4. Giống 2
Combine....
1. Charlie Chaplin, whose films amued millions, died in 1977.
2. My parents send their best wishes whom you met last month. 
3. The parcel contained a bomb which they had opened carefully. 
4. The lady whom you met at the party last night is a famous writer. 
5. The women who lives next door is a famous singer. 
6. The film which is about a famous president is very interesting.