Rules for forming the past tense of regular verbs:

1. Add -ed to the base form of the verb (or -d if the verb ends in e)
Examples:
work, worked
play, played
wait, waited
save, saved

2. Verbs ending in -y preceded by a consonant, change the y to i and add -ed.
Example: carry, carried.

3. One syllable verbs (or two syllable verbs with stress on the last syllable) ending in one consonant preceded by one vowel, double the final consonant before adding -ed. Do not double x or w.
Examples:
drop, dropped
beg, begged
refer, referred

Instructions. What is the past tense of the following verbs?