19. My sister took me to school, and then she went to her office. (HAD) As soon as............ 20. I bought a new pen last Sunday. After that, I found my old pen. (HAD) > After 21. It is worth visiting Sung Sot cave when you come here ( THAT) XI suggest 22. Let's educate children to preserve traditional values.(WE) I suggest that .... 23/ It's not a good idea to cut the trees along this street. (WE) I suggest 24. Why don't we plant some more trees in our school yard? (PLANTING) I suggest........
