Only after the woman had her own child, _____ how difficult it was to be a mother.

There is no doubt ______ he will not be admitted to the room.

Mr. Green didn’t understand ________ made his daughter so absent-minded this morning.

Was it in the hotel _____ my father works _____ you met the film star the other day?

It is known to all that every minute ____ full use of____ the lessons will benefit students a great deal．

Only when ________ be possible to sign the papers.

“Well done, John! Not a single mistake ________ in your exam paper this time!” said the teacher．

In front of our village        .

–What’s the noise ? It sounds as if it comes from upstairs.  
--______. It must be the window-cleaner working , next door.         

Some young people in America are expected to leave ______ could be life’s most important decision---marriage--- entirely up to luck.