51. I think your suggestions will be of great ▲ (价值) to me.
52. Someone who is guilty has done something against the ▲ (法律).
53. If you travel by plane, you can get a ▲ (without paying any money) meal.
54. The two friends ▲ (更喜欢) playing chess to playing cards at the weekends.
55. When he heard the great news, he rushed out of the room ▲ (at once).
56. I’m sorry to ▲ (打扰) you. Thank you for your time.
57. Li An is one of the best ▲ (导演) in Asia. I like his films very much.