Look !A boy       on the playground. 
#39826
A
runs
B
running
C
is runing
D
is running
推荐题目
—Why, Jack, you look so tired!---Well, I _____the house and I must finish the work tomorrow.
#41924
A
was painting
B
will be painting
C
have painted
D
have been painting
Hello! I'm very glad to see you. When_________ you_________ here?
#42301
A
did; arrive
B
will; arrive
C
have; arrived
D
are; arriving
We         each other since I left school.
#37194
A
don’t see
B
didn’t see
C
haven’t see
D
haven’t seen
 My grandma ______ to see me .Please help me to buy some food.
#40361
A
is coming
B
comes
C
came
D
coming