【简答题】They want to know if we'd be interested in s____ a tour they want to make to East Asia.
【单选题】They want to know ()to help us.
【单选题】They want to know ______ do it to help us.
【单选题】They want to know ________ do to help us.
【判断题】平均产量曲线一定在边际产量曲线的最高点与之相交。( )
【单选题】They want to know ______do to help us.
【单选题】They want to know_ do to help us.
【简答题】A.Because they want to know something that the others don't know. B.Because they understand the importance of the course. C.Because they can learn more in this course about their professionals. D.Beca...
【单选题】They want to know do to help us.