They considered ______a computer, which was considered ______a great help in their work．

You can go out, _________you promise to be back before 11 o’clock

Mr. Wang often ________ his dictionary in the library.

She says that she’ll have to close the shop ________ businessimproves.

What made the archeologist feel excited was that hefinally found two ancient vases in ______ seemed to him to be a king’sbedroom