`1. Scientists have made many important new ______ of the depth by using modern devices. (discover)
2. Community police have made a very positive ______ to crime prevention. (contribute)
3. They are investigating the ______ disappearance of a young woman. (mystery)
4. By the age of eighteen he was completely ______ of his parents. (depend)
5. The ______ of the seabed is being carried out. (investigate)
Yêu cầu
1 : đây là dạng gì
2 : sửa đầy đủ
Thanks !