---Is there anything wrong, Bob? You look sad. ---Oh, nothing much.In fact, I of my friends back home.
—Catherine, I have cleaned the room for you. —Thanks. You _____it. I could manage it myself.
He paid for a seat, when he _____ have entered free.
—Do you know where David is? I couldn’t find him anywhere. —Well. He _____have gone far—his coat’s still here.
If the new arrangement doesn’t _____, we’ll go back to the old one.
All the girls swam in the lake except two, who _____ halfway.