Điền dạng đúng của mệnh đề danh từ

Điền dạng đúng của mệnh đề danh từ
1. Do you understand......... I've said?
2. I don't know......... phoned me last night
3. I'm sure........ he will come
4. I wonder.......... this tree is
5. I'm afraid......... you didn't understand me
6. I don't know......... she is living now
7. I wonder........ I can repair this machine
8. ........... he'll return is not sure
9. I don't know....... he is lazy like that
10. He siad....... he made a mistake