The past of "travel" is:
travelled (British English)
traveled (American English)
The past tense is occurred.
The past tense is smogged.
That is the correct spelling "bought" (the past tense of to buy).
The correct past tense spelling is succeeded.
The correct past tense form of "choose" is "chose." "Choosen" is not a correct form of the past tense.
The correct spelling is was (past tense of verb to be).
The correct past tense spelling of "label" is "labeled" in American English and "labelled" in British English.
That is the correct spelling of "bathed" (past tense of to bathe, to wash).
The correct spelling (past tense of the verb to operate) is operated.
That is the correct spelling of "wore" (past tense of 'to wear').
The past progressive tense of travel is:I/He/She/It was traveling.You/We/They were traveling.(Note the British English spelling is travelling).
The correct spelling is was (past tense of verb to be).