Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.
Hoa is asking Hai, who is sitting at a corner of the room, seeming too shy.
- Hoa: “Why aren’t you taking part in our activities? ______”
- Hai: “ Yes, I can. Certainly”
A.Can I help you?
B.Can you help me with this decorations?
C.Could you please show me how to get the nearest post office?
D.Shall I take your hat off?