As a new graduate, he doesn’t know _______ it takes to start a new business.

--- How’s Tom today? I’m sorry to hear that he’s ill.--- He said__________.

—Could you please tell me_______?—Sorry, you can turn to Mr. Lee for help.

Although the teacher had told Bob the history of telephone, Bob didn’t know when ____. 

－What about finding out ______ Alice is going to Taizhou?－I’m afraid her friends have told her Taizhou has many places of great interest．