一Middle school students don’t know much about shopping online, _______ they?一 _______. It’s very popu]ar with teenagers.
The phonetic transcription for the word “of” is ______.
I have ________ useful knife and my sister has _______ eraser.
The tall boy ______ you just met is my brother.
-- Peter knows much French. -- ________.
Which sign tells you to go straight ahead? A. B. C. D.