Xinjiang is one of the largest autonomous regions in China. It’s _____ the northwest of China. [ ]

Oh, you look so beautiful in the red shirt. It’s in style.—Thank you. I bought it in Huangshang Supermarket last Saturday.

It’s ________pleasure for me to be invited to play the piano at the concert.

Jake _____his key in the office so he had to wait until his wife _______ home.

My mother is in Australia _____ present. [ ]