Verb forms help us to make time reference through their tense. Tense shows whether an action or a state took, take or will take place. For example, the simple past tense is used to express actions that have already happened; the simple present tense is used to express an action that is taking place or happening now; and, the simple future tense is used to express an action which will certainly take place at a time later than now. With that in mind, check the answer whose information provided is the only one correct about simple tenses sentences structure and verb conjugation.

“I can’t breathe.”
The modal verb in the phrase above express

“It was one of the first moments I remembered after learning what happened to him.”
Which sentence below has the same justification about the use of -ing as in the one above?

What is the verb tense in the sentence below?
[...] A group of close friends, on their way home, were contemplating... [...]

Choose the CORRECT answer.
My wife: “Look at all the smoke up ahead. Me: Crazy, right? And look at the number of firefighters and ambulances. The accident _________ have been serious.”