下列句中加横线的成语使用不恰当的一项是

Hi, Jane! Can you go hiking with me on Sunday— . I have too much homework.

The grocery has built a reputation on selling fresh organic produce _____chemicals.[ ]

ng the bookstore, I noticed a girl _______against the window, with her eyes_____ on her book in hand

As we know, England is ______ European country and Singapore is ____ Asian country.