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【題目】It's ________ (believe ) that Huoshenshan Hospital was set up in Wuhan in just 10 days.

【題目】Life is invaluable. This is a price we must pay and a price is worth________ (pay).

【題目】—________has she been in Beijing?

【題目】Gina used to live in the countryside with her parents, but now she is used to ________with her classmates at school.

【題目】—Do you know that we have already made great progress in 5G?

【題目】Look at the sign "No swimming", it warns us ________ in the lake.

【題目】There ________ something wrong with my mobile phone. It can't work these days.

【題目】________ you keep moving, you'll never reach the top of the mountain.

【題目】—I asked him a question, but he didn't reply.