In front of our house stand a lot of tall trees, the ______ of which give welcome ______.
A.shadows; shadeB.shadows; shadowsC.shade; shadeD.shade; shadows在线课程A
首先要弄清楚每一空的含义：第一空表示“树影”：第二空表示“树荫”；再看单复数：shade是不可数名词，无复数形式，而shadow既可作可数名词又可作不可数名词又如：By 6 p.m.this part of the garden is in shadow.
到下午六点，花园的这一部分就在阴影里了。