23. Knowing office rules — whether _______ or not—is critical, especially for young job seekers.
If you want to change for a red one you'll have to pay ___________ $ 20.
September 18, 1937 is a day _______ all Chinese will remember forever.
There are some health problems that , when _______ in time , can become bigger ones later on.
You will be surprised how quickly you _____ the money , so it is worthwhile to make a plan in advance.
---How much does this store often _______ for such large eggs ? --- Only $ 65 US cents a dozen . It was a real bargain.