Bt1:
1.cleaned
2.have collected
3.collected
4. has flown/ went
5. Have you ever seen/ saw
Bt2:
1. Many precious relics are displayed in the Temple of literature.
2.Many old trees and beautiful flowers are taken care of by the gardener.
3. Lots of sovenirs are sold inside the Temple of literature.
4.Khue Van Pavilion are regarded the symbol of Ha Noi.
5.The Temple of Literature is considered one of the most important culture and historic places are considered in Việt Nam!.
