未知题型
She ______ her dog.
["strokes; stroked; is stroking; was stroking"]
单项选择题 马克思主义在哪些方面通过十月革命吸引了先进中国人( )
未知题型 What is she doing She ______ ______ ______ () her missing dog.
单项选择题 拉马克是: