[典例]
China has become the first country to land a spacecraft on the far side of the moon. The unmanned Chang'e-4 probe (探测器)—the name was inspired by an ancient Chinese moon goddess—61 (touch) down in the South Pole-Aitken basin last week. Landing on the moon's far side is 62 (extreme) challenging. Because the moon's body blocks direct radio communication with a probe, China first had to put a satellite in orbit above the moon in a spot 63 it could send signals to the spacecraft and to Earth. The far side of the moon is of particular 64 (interesting) to scientists because it has a lot of deep craters (环形山), more so 65 the familiar near side. Chinese researchers hope to use the instruments onboard Chang'e-4 66 (find) and study areas of the South Pole-Aitken basin. " This really excites scientists," Carle Pieters, a scientist at Brown University, says, " because it 67 (mean) we have the chance to obtain information about how the moon 68 (construct)." Data about the moon's composition, such as how 69 ice and other treasures it contains, could help China decide whether 70 (it) plans for a future lunar (月球的) base are practical.

61. touched
62. extremely
63. where
64. interest
65. than
66. to find
67. means
68. is constructed
69. much
70. its

这是一篇语法填空题，逐空解析如下：
61. 句中时间状语为last week（上周），描述过去发生的动作，谓语动词要用一般过去时，touch的过去式为touched。
62. 此处需要副词修饰形容词challenging（有挑战性的），形容词extreme要变为副词形式extremely。
63. 先行词是表地点的名词spot（位置），定语从句it could send signals to the spacecraft and to Earth成分完整，用关系副词where引导定语从句，在从句中作地点状语。
64. 固定结构“be of + 名词”等同于对应的形容词含义，此处of particular interest 相当于particularly interesting，形容词interesting要变为名词interest。
65. 前文出现比较级标志more，此处是将月球远侧和近侧作比较，用than引出比较对象。
66. 固定搭配use sth. to do sth. 表示“使用某物做某事”，此处用不定式作目的状语，填to find。
67. 直接引语中陈述当前客观事实，主语it是第三人称单数，谓语动词mean要变为第三人称单数形式means。
68. 主语the moon和动词construct（构成）是被动关系，此处描述客观情况，用一般现在时的被动语态，填is constructed。
69. 修饰不可数名词ice，表达“多少”的含义，用固定搭配how much，填much。
70. 此处修饰名词plans，要用it对应的形容词性物主代词its，表示“它的（中国的）计划”。