---I went to Paris on my vacation. --- ______
When I opened the fridge, there ______ only some eggs and a bottle of milk.
— Did you meet ______ interesting at the party?— Not really.
I like this room. You ______ see the mountains from the window.
Which book is ______ to understand, this one or that one?
I phoned Sarah last night, ______ there was no answer.