1.(2020新高考Ⅰ,36)Many people have the hobby of collecting things, e.g. stamps, postcards or antiques. In the 18th and 19th centuries, (wealth) people travelled and collected plants, historical objects and works of art.
答案 wealthy
2.(2020课标全国Ⅰ,62)Landing on the moons far side is (extreme) challenging.
答案 extremely
3.(2020课标全国Ⅱ,66) (certain) during the holiday period, this plant is a must.
答案 Certainly
