用“who”或“that”填空。
1. The man ________ is talking with my mother is my father
2. That book is the one _______ I bought yesterday .
3. He is one of the workers ________ been saved in that accident .
4. They talked of the things and persons ________ they remembered in the
factory .
5. All ______ can be done must be done .
1. who
2. that
3. who
4. that
5. that