----- Why does Sara know so much about Angkor Wat? ----- She _________ have been there, or….
Once ____________ , a plan should be carried out.
—"How do you like the book?"— "It's quite different from I read last month."
He failed in the examination, ________ made his father very angry
I had _________good lunch at ________ restaurant __________ we met for the first time.
They would be good friends _______ he saw her at the party.