Jim was late for two classes this morning. He said that he forgot both of the ______.
This is the largest clock in the world, _____ the minute hand is six meters long.
Sarah hopes to become a friend of _____ shares her interests.
Liu Xiang is ________ Yao Ming.
When and where to go for the on-salary holiday _____ yet.
The water will be polluted unless some measures _____.