Where is the missing boy is still a _______.
A: mystery
B: mysterious
A: mystery
B: mysterious
举一反三
- What happened to the missing child was still a _____. A: mystery B: mysterious
- What happened to the missing child is a_______. A: mystery B: mysterious
- The reason why she did it is still a () A: mystery B: mysterious
- The reason why she did it is still a _______. A: mysterious B: mysteriously C: mystery D: mysteries
- ()caused the accident is still a complete mystery A: What B: That C: How D: Where