Which sentence contains an error?

we were taking a science test when the fire alarm rang.
my mother is cooking dinner right now.
marcus and jason will been playing in a soccer tournament all weekend.
suri has been looking for brenda this morning.

Part b: which phrase from the text best support the answers to part a? a. “i don't want to talk to somebody when i go check in at an airport. i just either download the boarding pass to my phone or walk up to a kiosk and get it.” (paragraph 8) b. “you do not have to go far to find someone who disagrees with andrew mcafee, just around the corner to the office of another person at the same university.” (paragraph 11) c. “the set of things that machines do not do like humans is innumerable.” (paragraph 16) d. “you wonder if you're joining that long litany of voices who go down as having made the incorrect prediction one more time, but i think the facts are different this time.” (paragraph 23)

In the communication breakdown section, michael b. green learned that "a red rag" or a had nothing to do with the internal makeup of the person who was wearing it.

Has anyone ever read the poem “at a window “ by carl sandburg? there are a few multiple choice questions i have to answer about it.