题目内容
21、As explained in the introduction, the bottle needs only __________ clean.
A．to wash B．washing C．being washed D．to be washed
试题答案
21、C
相关题目
题目内容
21、As explained in the introduction, the bottle needs only __________ clean.
A．to wash B．washing C．being washed D．to be washed
试题答案
21、C