.Work on Rome’s Palatine Hill has turned up a series of discoveries, including____ might be the underground cave .

When shall we start?—Let’s _____ the time for the trip. What about 8:30? Is that all right?

The White House is a beautiful building_____a lot of trees and a big garden.You can invite your friends __________ it.

There is in the bookcase .I took everything out .

Little ______ that we were watching his every move，so he seemed to be going his own way in this business.