Both are very unnatural, for reasons that aren’t related to what they are testing. They will fight again. (They once fought. They aren’t fighting now. They will fight in the future. There’s little sense of an ongoing conflict or timeline) They will be fighting again. (They aren’t fighting now, but they’ve been fighting off and on and they are bound to start fighting again. The right answer.)

There is a task in my Grammar book. It's sounds - "put the verb in brackets into the correct form, Future Indefinite or Future Continuous. There is a sentence: "After (just) a few words and they _will_____(quarrel) again." <-- this is much more natural My version is: 1. After a few words and they will quarrel again. But version in task's keys is apart, as showed below: 2. After a few words and they will be quarrelling again. What sentence sounds more natural? "They will quarrel again after (just) a few words" "They will be quarrelling (once) again after (just) a few words" words in brackets are optional. which grammar book? is this

Both versions (yours and the key's) are natural. Your version is being a little more assertive/more certain that they will quarrel. When I hear the 2nd version I still think there is a chance they won't be quarrelling. Whereas, with your version it sounds to me there is no doubt at all that they will quarrel.

Hi Megan. Yes the meaning of the sentence as you have written down - "Even with just a few words spoken, they will be fighting." But, my sence of that tense (Future Continuous) is following: 1. They will be quarrelling from 5:00 AM to 5:30AM (the time may be differ. It noted there for example). My sence of Future Indefinite is following: 2. They will quarrel means that they will do that, not surely because there is condition - "if a few words will say".

Firstly, the sentence structure is super odd to begin with... a few words what? Does it mean that even with just a few words spoken, the two will be fighting? If so, the correct sentence would be, "With just a few words they will be quarreling again"