.It is uncertain whether the medicine will work on the this cold,________?A, is it B. isn't it C, will it D. won't it
. ------ The door was open. ----- It ___________open. I had locked it myself and the key was in my pocket.
The reason for his success is ___________he worked very hard.
--------- ___________did they visit the moon last month? ---------They visited it in a spaceship
He was about to tell me the secret___________someone called him by his name.
He used to make a living_________playing music on festivals. Now he makes shoes__________ his own hands.