题干
All of us went to the park Bob. He had to look after his sister.
A：besides
B：with
C：except
D：except for
答案(点此获取答案解析）
C
All of us went to the park Bob. He had to look after his sister.
A：besides
B：with
C：except
D：except for
在，18世纪70年代，首先发现并制得氯气的化学家是