19 +
20 have been (and still there are (it's present), this way you have you use some present tense, not past)
21 +
22 bodies (1 body - many bodies)
23 was painted (the painting was painted in the *past*, so you can't use the present tense, and it didn't paint itself, so you need passive)
24 had unearthed (*made him* << this happened in the past, unearthing happened before "made", so you use the past perfect )<br>25 will allow (he hopes (now) that something WILL happen ih the *future*, so you use the future simple )
26 catastrophic (you need an adjective to describe a noun *breakdown*)
27 remarkable
28 +
29 exclusively
30+
31 +