Each of the following pairs of words is missing a word.
Find the missing words.
$$\def\T#1{\text{#1}} \begin{array}{rl} \T{A} & \T{DING}\\ \T{CAN} & \T{GAS}\\ \T{IN} & \T{ADS}\\ \T{LIFE} & \T{LESS}\\ \T{MARSH} & \T{SPICE}\\ \T{OUT} & \T{BACK}\\ \T{PREP} & \T{ANT}\\ \T{PRO} & \T{FISH}\\ \T{SCATTER} & \T{WILL}\\ \T{SEE} & \T{ME}\\ \T{TAX} & \T{LAND}\\ \T{TEE} & \T{REIN}\\ \T{UP} & \T{MAN}\\ \T{WHERE} & \T{EVER}\\ \T{WIN} & \T{HERE}\\ \end{array}$$
When you're done with that, ...
There's a word missing from the set of missing words you found.
What's the final missing word?
Why is it missing?
For full marks ...
What kind of test is this?