thanks Jenny all of those you listed are prepositions really i think... the test is putting them in a full sentence such as:

The boy is 6 feet tall.

tall = adjective
6 feet is a measurement phrase.

and they felicitously combine! :-)

thanks for trying!

i'm interested to see if one can characterize all the adj. that to license measure phrases semantically. For example, perhaps they are all adjectives that measure only time and one-dimensional space, or an abstract comparative scale. (but no multi-dimensional scales for example! :-) )

best!

blessings! :-)