It is none of your business ______ other people think about you. Believe in yourself.
| A．how | B．what | C．which | D．when |
16. _______ medicine works in a human body is a question _______ not everyone can understand fully.
| A．How; that | B．That; which |
| C．That; which | D．What; that |
. These wild flowers are so special I would do _______ I can to save them.
| A．whatever | B．that |
| C．which | D．whichever |
. When you answer questions in a job interview, please remember the golden rule： Always give the monkey exactly _______ he wants.
| A．what | B．which |
| C．when | D．that |
_______ we are doing has never been done before.
| A．That | B．What |
| C．Which | D．Whether |
_______ she couldn’t understand was ______ fewer and fewer students showed interest in her lessons.
| A．What; why | B．That; what |
| C．What; because | D．Why; that |