Do you notice the strange noise of the computer Maybe _____ is wrong with it.

These English songs are very popular and theyoften____ on the radio all the time.

______ you understand it, it’s easy for you to obey it

President Obama is letting Congress writethe details of his plan for ________ he calls health insurance reform.

For all the professional athletes, _______to the Olympics means that they have a chance to enter the history books.