16.—Where is Lily, Lucy? I cannot find her anywhere. —She_________have been off long. I saw her clean the window just now.
She was to George for all that he had done for her.
There is something wrong with this bill.Please all the items again.
---Are you going to London for a holiday? ---___________.
On the other side of the street stand more than 180 houses, _______are in poor condition now.
I first met Mr Smith in America. He ________ at Stanford University then.