What's your favourtie place to go _____ weekends? [ ]
A. on
B. in
C. of
D. at
答案:A
一只不透明的袋子中装有2个白球和一个红球,这些球除颜色外其余都相同,搅匀后从中任意摸出一个球,记录下颜色后放回袋中并搅匀,再从中任意摸出一个球,请用树状图或列表的方法列出所有可能的结果,求出两次摸出的球颜色相同的概率.
—Who is the little girl in the picture?
—It's me. The picture __________10 years ago.
A.took
B.is taken
C.has taken
D.was taken