用所给词适当形式填空They find listening to the tape is ______(use) learn English.
问题描述:
用所给词适当形式填空
They find listening to the tape is ______(use) learn English.
答
应该是useful,你是不是少了一个to
答
used to
答
useful to
答
你确定提示完整的吗?