My sister took me to school, and then she went to her office (HAD)

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........