---How many students are there in the playground? ------ .
_________ the classmates’ help, we won the basketball final at last.
---Did you get there by_______bike?---No, I took _______ taxi.
----Listen! Is Kitty in the next room? ---- No, it ______ be Kitty. She has gone to Beijing.
The old man _______ since ten years ago.
The day _____ the trip _____ Beijing finally arrived and we were all excited ______ it.