My pen pal Ann found it difficult ______ Chinese well.
| A．learning | B．learn | C．to learn | D．learned |
I have ________ aunt and ________ uncle.
| A．a; an | B．a; a | C．an; a | D．an; an |
---Are these your books?
--- Yes, ________.
| A．I am | B．these are | C．they are | D．you are |
Thank you ________ your e-mail.
| A．of | B．at | C．for | D．in |
The boy is ________ the room.
| A．on | B．in | C．at | D．under |
---Where are your brothers?
---________ in the classroom.
| A．He’s | B．She’s | C．They | D．They’re |