True friendship is like sound health, ________ the value is seldom known until it is lost.
.— Do you happen to have twenty dollars on you? —______? — I want to buy a reference book.
.But for the storm, we ______ earlier.
A good friend of mine from when I was born _______ at my home right before I left for Beijing.
.The factory I worked______ has been taken down and replaced by some buildings.
Hurriedly, they packed their belonging and set off ______the direction of the river.