1.(2019课标全国卷Ⅲ)On our way to the house, it was raining hard that we couldn't help wondering how long it would take to get there.
1. 答案 so 考查固定结构。此处表示“雨下得如此大以至于我们不禁琢磨着要多久才能到那里”。so...that...如此……以至于……。
2.(2017课标全国卷Ⅰ)However, be (care) not to go to extremes.
2. 答案 careful 考查形容词。此处为形容词作表语,故填careful“当心的”构成系表结构。
3.(2017课标全国卷Ⅱ)Steam engines were used to pull the carriages and it must have been (fair) unpleasant for the passengers, with all the smoke and noise.
3. 答案 fairly 考查副词。应用副词修饰形容词unpleasant,故在其前填fairly。
4.(2017课标全国卷Ⅲ)It is (certain) fun but the lifestyle is a little unreal. I don't want to have nothing else to fall back on when I can't model any more.
4. 答案 certainly 考查副词。此处fun是形容词,应用副词修饰形容词作状语,故填certainly。