1. I really have no idea __ to call your father when I see him.

a. how b. what c. which d. who

2. If was not until we came back form outside __ out of his bed.

a. did he get b. when he got c. that he got d. then he got

3. It was not until she had arrived home __ her appointment with the doctor.

a. did she remember b. that she remembered c. when she remembered

请回答为什么?

1.当我看见你父亲的时候真不知道如何称呼。（不要受汉语影响）
我认为B是对的，call sb.****称某人为什么，what是your father 的宾补，how 是副词，不能用。如：Jack calls my father uncle.
2.C 3.B
it is\was not until......that.......这是一个强调句。
2可变为He did not get out of his bed until we came back form outside .
3一样的道理She did not remember her appointment with the doctor until she had arrived home.