We know that a smile is usually a sign _____ people feel friendly and happy, but _____ we don’t know who the new person is?
—Would you please take this box along to the office for me? —_________
Tom took the police to the spot ____ the accident happened.
You think you’re poor, but look at people in really poor countries—it’s all ____.
.The large grassland, reaching out far away, looks extremely beautiful _______ the blue and clean sky.
.——Doctor, what do you think about the operation on my mom?——Couldn’t be better.I’m sure she’ll recover ___________.