-Ten minutes ago, there __________ an eraser, a pen and some books on the desk.But now there __________ anything on it.
-Don't worry. Maybe someone put them away.
A. was, isn't
B. were, isn't
C. is, wasn't
Dwas,wasn't
-When __________ Mr. Green __________ to Australia?
-He traveled to Australia two years ago.
A. did, travel
B. did, traveled
C. was, travel
Dwas,traveled
-He __________ his mother do the housework at the age of eight.
-We should help our parents with the housework. I did it when I __________ six.
A. helped, was
B. helps, was
C. helped, am
D helped, am