词义辨析。
A) have a look / have a look at
1. Can I _____ the photos of your family?
2. —I have a new pen.
—Let me _____ .
3. May I _____ what's on television?
B) on one's way back / by the way
4. _____ home, he saw a girl crying.
5. _____ , have you seen John lately?