读句子,选择正确的做法。
A. we should be quiet B. we should stand in line C. we should help him or her D. we should give a seat to him E. we should be patient F. we should say “excuse me” |
16. If a little child falls to the ground,
______.
17. If there are many people at the bus stop,
______.
18. If an old man is standing on the bus,
______.
19. If we are taking care of the young,
______.
20. If we want to ask someone for help,
______.
21. If we are at the library,
______.