—Keep on ______ and you'll make progress.
—Yes, but if you keep ________ , you can make progress.
—That's true. It is well worth __________again.
—____________ my best friend from Canada at the airport.
—I'd love to, but my parents won't let me _________out too late.
—No, we can't swim in the river. Our teachers and parents always warn us ________in the river. It's too dangerous.
—I want the old people's home to talk to them.
—She was busy _______and taking selfies(自拍) when I was talking to her.
—I'm sorry, but my father and I planned _________ Beijing a long time ago.
—Don't be sad. Here is good news for you _______.
—Right. 5G will allow us ________ English movies faster than ever.
— I think so. Forests are the best places for animals ______________.