下列单词中划线部分的读音不同于其他三项的一项是:
There _____________ more trees if we all take care of our environment.
I can see _________birds in the sky.
— __________will you come back to our city? —In a week.
Peter some beautiful postcards for his friends yesterday.
— will Linda stay in the country-side with her grandparents? — Maybe two weeks.