____not for the support of the teachers,the student could not overcome her difficulty.

Who is the woman in black?— ________ is our physicsteacher.

Were you alone at home yesterday? — Yes, my children as well as my wife _____ invited to the party. [ ]

What’s the matter? —- Oh, sorry. I pressed the button by chance and _______ the alarm clock.

Can Sally play the piano—________. She thinks it is easy for her.