1.3 Provide the Missing Principal Parts

Fill in the missing principal parts. For second conjugation verbs, use the keys at the bottom to insert the long a, e, i, o, and u of the infinitive. Click "Check" to see how you did, or click "Hint" to receive the next letter in the answer.
amō
dēbeō
habeō
iaceō
iuvō
labōrō
laudō
moneō
optō
superō
taceō
terreō
timeō---
videō
vocō