He went to the States in 1910,by _________ time he had learnt to dance and act in comedies.

1. A.
   that
2. B.
   the
3. C.
   which
4. D.
   whose

.He went to the States in 1910,by _________ time he had learnt to dance and act in comedies.

A.that     B.the    C.which    D.whose

He went to the States in 1910,by _________ time he had learnt to dance and act in comedies.
A. that     B. the    C. which    D. whose

He went to the States in 1910, by ______ time he had learnt to dance and act in comedies.

A. whom　　    B.whose  C.which　　　　　　    D.that

A. whom　　    B.whose  C.which　　　　　　    D.that