Look !A boy       on the playground. 
#39826
A
runs
B
running
C
is runing
D
is running
推荐题目
—What is Lucy doing now?—She _____ a book. 
#39687
A
read
B
reads
C
reading
D
is reading
Great changes ______ in the city and a lot of buildings ______.
#42171
A
have taken place, have been set up
B
have been taken place, have been set up
C
were taken place, were set up
D
have taken place, set up