把下列句中使用错误的冠词找出来并改正.

把下列句中使用错误的冠词找出来并改正.1.Wang Tao is the girl,and Li Ming is a boy.2.This is a orange.3.—What‘s this?—It’s an notebook.4,.That‘s a English map.5.Look at a cap,it‘s very nice.6.This is a pen.A pen is black.7.Is it an Chinese book?8.There are sixty minutes in a hour.9.This is an useful book.10.There is a L in the word（单词）“ruler”.