1 . 他突然想到可以走海路回到家乡。
________ ________ ________ ________ he might return to hometown by sea.

2 . 给我印象最深的是她乐于帮助处境困难的人。
______ ______ ______ ______ is her willingness to help others in trouble.

4 . 这幅画富有冲击力，画中有一个表情恐惧的瘦弱身影——嘴巴大张，正发出强烈的尖叫声。
________ makes it striking is that it shows a thin figure with an expression of fear — the figure’s mouth is wide open and ________ ________ a powerful scream.

6 . 然而，他最关心的是农民经常粮食歉收，有时甚至出现严重的食物短缺。
However, ________ was that farmers often had poor harvest and sometimes even________ to eat.

7 . _________ __________ ________me most is that in Chimelong Ocean Kingdom in Zhuhai, we can walk under the world's largest Whale Shark Aquarium.
最吸引我的是在珠海长隆海洋王国，我们可以漫步于世界上最大的鲸鲨水族馆。

8 . _________ __________ _________that one billion people are suffering from hunger in the world.
据估计，目前世界上有十亿人在饥饿中挣扎。

10 . 据估计，这项治理水污染的工程至少要耗费三年的时间。
________ the project to control water pollution will take at least three years.