Someone is knocking at the door. It _______ my mother. It’s time for her to be back.
| A．can be | B．may not be |
| C．must be | D．mustn’t be |
——How was your trip? —— I hope I can go there again.
| A．Just so-so. | B．Not very good. |
| C．Wonderful. | D．Nothing special. |
——What can I do for you? ——
| A．Yes, you can give a shirt to me. |
| B．I’d like a shirt. |
| C．No, I can do it myself. |
| D．I can do what I want. |
——How are you? ——
| A．Good morning. | B．Nice to meet you, too. |
| C．Not bad, thanks. | D．I’m 16 years old. |
——Happy birthday! ——
| A．Thank you. | B．All right. |
| C．That’s OK. | D．The same to you. |
_______ he is in poor health, ______ he is still busy working all day and all night.
A. Although; but
B. Although; /
C. Although; and