l now, full use of this theory hasbeen ________ in building large ocean-going ships.

____ the search engine just gave me some brief introductions rather than the whole content of the book to read

Where did you get such a beautiful skirt?-It was at the department store ________we used to shop.[ ]

do youhang that photograph above the fireplace—— visitors of the memorial days of LongMarch, Sir

Is that_____ pen — Yes, it is.