They experimented _____the new medicine _____animals. A.on; to B by ; on C.with ; on D with; to
A small plane crashed into a hillside five miles east of the city, _______ all four people on board.
—Jenny, it won’t be long before I receive the admission letter from Oxford University. —_______
In my opinion, everyone has periods in their lives _______ everything seems very hard.
Tom _______ the TV set for $500,which was much cheaper than he had expected.
Henry’s birthday is on _______ Saturday next month,but I don’t remember _______ date.