--When did your father come back last night? --He didn't come back _______ he finished all the work. A. until B. while C. if
--- You never feel worried before an exam, how can you? ---Well, I’ve been working hard all the time. Surely I am _________ any exam.
---Can you guess _________ the new Nike sports shoes? ---Yes. Maybe he asked his grandpa to pay for them, I think.
--- Who? Brian? --- Right. He often gives me a ______ when I’m in trouble.
What _____ useful book! And _____ book is popular with students.
The underlined part in the word “grades” is pronounced as______.