hill

自行车在下坡时速度越来越快。

The bicycle picked up speed as it went down the ___hill.

孩子们在公园里用泥土堆了一座小山。

The kids built a ___hill of dirt in the park.

绿色的山丘环绕着整个村庄。

Green ___hills surround the entire village.

我们周末去爬了附近的一座小山。

We climbed a nearby ___hill on the weekend.