Suddenly is an adverb, and adverbs don't have tenses.
The verb is is the present tense.
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
It was, (past tense) it is, (present tense) it will be( future tense)
Past tense I had Present tense I have Future Tense I will have
"Has" is in present tense. The past tense is "had".
In the given text, "have ... died" is in the present perfect tense; "are ballooning" is in the present progressive tense; and "burst" is in the simple present tense.
The verb is is the present tense.
I already answered it once: In the given text, "have ... died" is in the present perfect tense; "are ballooning" is in the present progressive tense; and "burst" is in the simple present tense.
The past tense of did is did. The present tense of did is do. The future tense of did is will do.
It was, (past tense) it is, (present tense) it will be( future tense)
Past tense I had Present tense I have Future Tense I will have
"Has" is in present tense. The past tense is "had".
No 'is' is present tense. am/is/are = present tense was/were = past tense
Present tense
the present of did is didnt Do is the present tense of did. Didn't is the past negative form
Should is present tense.
Creep is present tense. The past tense is crept.