Had you joined the caht room ten minutes ago, you would have known what we _______about then

To our surprise, not a single word ________ in the discussion last Friday. [ ]

Is _____he said really true

Since most Antarctic rocks are dark in color, they stood out _____ the white background and are easy to identify and collect

Excuse me, where is Johnson? He cannot go home, as his book is lying __________on his desk. [ ]