When she returned home, she found the window open and something ______.
How many students are there in your class ____ homes are in the country?
Alice received an invitation from her boss, ____ came as a surprise.
The train was crowded and I had to get into a carriage ____ already seven other people.
I live in the house ____ windows face south.
---- What game is popular with them? ---- The ____ most is tennis.