—What were you doing at this time yesterday? —I ______ on the grass and playing with Tony. 
#38003
A
sit
B
sat
C
am sitting
D
was sitting
推荐题目
 –The head teacher with his students ______ Zhongshan Park if it _____ tomorrow.--That sounds wonderful.
#36144
A
is going to, isn’t rainy
B
are going to, isn’t rainy
C
is going to, won’t rain
D
are going to, doesn’t rain
Do you know what     in the room at the moment?
#40168
A
they were doing
B
were they doing
C
they are doing
D
are they doing
By the time my mom _____ to our school, all others of my class ______ for home.
#42475
A
got, left
B
got, had left
C
had got, had left
D
had got, left