There are many old people _______ are taking a walk in the park.
温度/℃
0
10
20
30
40
50
60
70
80
溶解度/g
29.4
33.3
37.2
41.4
45.8
50.4
55.2
60.2
65.6
Let's climb ____ the top of the mountain and see the sunrise.
