Cái váy được nhắc đến lần đầu nên ta dùng mạo từ “a”
Last week: cuối tuần (cụm cố định), không có mạo từ đằng trước
Dịch nghĩa: Bạn gái tôi mua một cái váy tuần trước
He is jealous .............. his rival's success.
Mary married a wealthy man. She got married .............. him last June.
I can't get this ring .............. my finger.
I shall wait .............. you.
These goods are free .............. duty.
I have taught English .............. 6 years.
Elizabeth is fond .............. going to dances.
I have twenty students .............. my class.
He wasted little time .............. social formalities.
It was .............. my will.