That’s an important event________American history．
A．in
B．at
C．on
D．for
She________TV at home when it began to rain．
A．watched
B．was watching
C．watches
D．is watching
—What is she doing over there？
—She is waiting for her kid________home for dinner．
A．go
B．to go
C．going
D．to going
I________，but I didn’t________anything．
A．listened；listen
B．heard；hear
C．heard；listen
D．listened；hear
I don’t remember________the book yesterday．
A．where I put
B．where did I put
C．where will I put
D．where I will put
—Mum，it’s late．Why are you still here？
—Dad hasn’t come back yet．I________for him．
A．am waiting
B．was waiting
C．waited
