Activities of the Science Festival _____ model planes and model rockets are flown over the school grounds include the Inventions Show and the Essay Competition.
The thief ___ when he was stealing a wallet from a woman.
We early to avoid the traffic,and it took us only half an hour to get here.
---Would you like some more beef?---No, thanks. I’m ______ a diet.
At the wedding, he sang a song specially written for the ____.
----- Is that Mr.Smith over there? ----- No, it _____ be him --- I am sure he is much taller.