arch

夏日暴雨过后，彩虹拱形跨越地平线。

Rainbows ___arch over the horizon after a summer storm.

穿过拱门，你便进入一个开阔的庭院。

Passing through the ___arch, you enter an open courtyard.

小路经过一个古老的石拱门，那里经常有音乐家演奏。

The path led past an old stone ___arch where a musician often played.