We should be friendly to the --------（visit）from other count

名词 n.[C]
1.访问者;留住客;探病者
Marty was a frequent visitor to our house.
马蒂过去是我们家的常客.
2.观光者;参观者
There are many visitors to the White House every year.
每年参观白宫的游客很多.
3.视察者,检查者
4.候鸟
是可数名词 在此需要复数表示一类人.所以填这个
visitors