— I’m sorry, sir. I can’t finish the work on time.— Never mind. ________, the work is quite difficult.

----Must I put my bike here? ----No, you           .

G. E.M. is ______ a famous singer______ many teenagers like listening to her songs.

— Who is Mr. Smith? — He is _______ English teacher. 

The model plane isn’t as nice as my partner’s, but _____ it was made by myself.