Hi there!
a) Did Mark break the glass?
Yes, he did.
b) Was your sister doing her homework when I called?
No, she wasn`t.
c) Did mother sign your report this morning?
No, she didn`t.
d) Did Sheila go to piano lessons yesterday?
No, she wasn`t.
e) Was he talking on the phone when you saw him?
Yes, he was.
f) Did you see the plane?
No, I didn`t.
g) Was he swimming at 5 p.m.?
No, he wasn`t.
h) Was father sleeping when you went home?
Yes, he was.