Question

Form two past participles in which the last letters is doubled​

Answer 1

Explanation:

Any two participles where the last letters (of the base verb) are doubled are:

STOP - STOPPED

SLIP - SLIPPED

Answer 2

Answer:

There is a supposed 'rule' in American English that if the final syllable in a multi-syllable verb is unaccented/ unstressed/ un-emphasised, then the last letter of that syllable is _not_ doubled in forming the present participle - eg “worshiping”, “kidnaping” (compare to “shipping” and “napping”).....