Write the correct form  the words in brackets

I.            Write the correct form  the words in brackets.

19.  Let’s go ___________ at Ba Vì Nayional Park this weekend. (CAMP)

20. Trưng Trắc and Trưng Nhị won many battles against__________. (INVADE)

21. I can see many beautiful________French buildings in Hà Nội.(TRADITION)