【单选题】 They hold a party to observe their 30th marriage anniversary.
- A. watch
- B. understand
- C. explain
- D. celebrate
网考网参考答案：D
网考网解析：
本题考查的是常见的动词。Observe观察，遵守，庆祝；watch观察，看；understand明白，理解；explain解释；celebrate庆祝，所以正确答案为D。 查看试题解析出处>>
【单选题】 They hold a party to observe their 30th marriage anniversary.
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