—Would you have come to his help, had you been free?
—Yes. But I______ engaged.
| A．was | B．were | C．hadbeen | D．wouldbe |
"Do you know ________ " "His father is a doctor."
| A．what is his father | B．who is his father |
| C．what his father is | D．who his father is |
I have no idea ________ or not he has finished the work.
| A．if | B．that | C．whether | D．which |
One of the men held the view ________ the book said was right.
| A．what that | B．that what | C．that which | D．which that |
_______ did he tell his wife ________ he wished to do
| A．That...what | B．What...that | C．Where...which | D．Which...where |
________ was the idea _______ the wife thought of
| A．What...that | B．That...what | C．How...why | D．Why...how |