问题描述:
()in the chair is Mr.Smith,a professor who will give us a lecture on how to learn...
前面应该填seated 还是seating
我觉得是表状态 但是句首一般是ing吧?
前面应该填seated 还是seating
我觉得是表状态 但是句首一般是ing吧?
问题解答:
我来补答展开全文阅读