下列各句中均有一处错误，指出并改正。
(1) (2016·全国Ⅰ)Though not very big, but the restaurant is popular in our area.
________________________________________________________________________
(2)(2018·全国Ⅰ)At the end of our trip, I told my father that I planned to return every two years, but he agreed.
________________________________________________________________________
(3)(2018·全国Ⅱ)The games my parents taught me where I was a child turned out to be very useful later in my life.
________________________________________________________________________
(4)(2018·全国Ⅲ)Everyone was silent, waiting to see who would be called upon to read his and her paragraph aloud.
________________________________________________________________________
(5)(2017·全国Ⅰ)Before getting into the car, I thought I had learned the instructor’s orders, so once I started the car, my mind went blank.
________________________________________________________________________
(6)(2017·全国Ⅲ)I have grown not only physically, and also mentally in the past few years.
________________________________________________________________________
(7)(2016·全国Ⅰ)Every day he makes sure that fresh vegetables or high quality oil are used for cooking.
________________________________________________________________________
(8) (2016·全国Ⅱ)If we stay at home, it is comfortable but there is no need to spend money.
________________________________________________________________________