---Who's the girl over there?---Oh, _______ is my friend, Wendy. I know_______ very well.
Tom didn't get up _______, so he missed the early bus.
What do the sheep_________?
Linda __________ to Beijing, she hasn't returned back yet.
They preferred ________ to school ________ a bus.
I __________ a gift yesterday, but I didn't ________ it.