The painter is clever in his ______of brushes and colors.
应该填employment还是application？
此题填 application；词组 in the（ones）application of：意为“在……的应用中”。
The painter is clever in his application of brushes and colors.
【翻译】这位画家擅长运用画笔和颜色。
in the（ones）employment of：受雇于。