It is often said that an American starts a speech with a joke , _______ a Japanese has an apology to make.

It is often said that an American starts a speech with a joke , _______ a Japanese has an apology to make.

1. A.
   which
2. B.
   what
3. C.
   while
4. D.
   that

It is often said that an American starts a speech with a joke , _______ a Japanese has an apology to make.

A. which               B. what               C. while       D. that

It is often said that an American starts a speech with a joke , _______ a Japanese has an apology to make.

.It is often said that an American starts speech with a joke, __ a Japanese has an apology to make.

  A. as    B. when   C. which   D. while