others.(用定语从句合并句子)

Chen Wei is afraid of the situation in which he will have difficulty in communicating with others.

5．Li Hua is concerned about a problem.The problem is whether he will be accustomed to the diet.(用宾语从句合并句子)

Li Hua is concerned about whether he will be accustomed to the diet.

[妙笔成篇]

【参考范文】　

Li Hua is active and optimistic while Chen Wei is friendly and a bit shy.However，they both enjoy playing sports，reading and listening to music.When it comes to what they worry about，Li Hua is concerned about whether he will be accustomed to the diet and Chen Wei is afraid of the situation in which he will have difficulty in communicating with others.

As far as their expectations，Li Hua desires to know more about the culture and history of Britain.As for Chen Wei he wants to make more friends and improve his English.