--- Are these pens your sister’s? --- No, _______ aren’t. They are _______ sister’s. A. they, Lily’s B. they, Lily C. these, Lily
On our way home, our bikes______, so we had to walk home.
Not only you but also Mary ______to ______after-school activities.
The sentence structure of “Eddie is watching Hobo work”.
--- We’re going to play on Huaguo Mount this week. --- Really? ______!
When he is free, he often helps his parents ________ some housework.