---Did you notice someone enter the classroom just now?---Sorry, I didn’t. I _____ my lessons at that time.
—Will you go to Japan for travelling on time after the earthquake? —____________.
—Morgan, could you tell me _____________? —In the Mexican city of Cancun.
There were few new words in the English competition for your daughter,_______?
While the alien _______ a souvenir, the girl called the police.
I think _________ necessary for students to take an interest in all subjects.