1. —Shall we go out for a walk?
— ________.
A. Good idea B. Have fun C. Good luck D. Goodbye
2. We discussed where to go for a whole morning, but we decided to stay at home ________.
A. by the end B. at the end C. in the end D. on end
3. Do you have any difficulty ________ ?
A. on listening B. to listening C. for listening D. in listening