1. I hope you will be able to pass the ______writing_________ examination. (write) (Trước danh từ là tính từ)
2. He learned that the house was for sale through an ______advertisement_________ (advertise) (Sau an là danh từ số ít)
3. Is it _____difficult__________ to answer that question? (difficulty) (Sau tobe + tính từ)