Stretches.
The rattlesnake appeared to be an ordinary rock just lying along the trail, until it moved.
The verb in the given sentence, "have understood", is in its present perfect tense. The sentence itself does not have tense, which is a property of verbs only.
Using "stretch" as a noun: There was a six-week stretch last summer when Phil and Marie didn't see each other at all. Using "stretch" as a verb: The radio announcer realized he was about to finish his report about 45 seconds before the next commercial break; he needed to stretch his comments with a few more sentences.
The eastern diamondback is larger than the timber rattlesnake, and they would probably ignore each other in the wild.
false
false
The Eastern Diamondback Rattlesnake (Crotalus adamanteus) is the largest species of rattlesnake, with adults typically growing to lengths of 4-7 feet. They are known for their distinctive diamond-shaped patterns along their backs and their large, intimidating rattle.
subject = dog present progressive = is walking adverb = slowly prepositional phrase = along the road. The dog is walking slowly along the road
the pacific ocean
It would stretch for 24,901.55 miles.
The Pacific Ocean.
You will need about 5 arborvitae trees to plant along a 50-foot stretch of your property, spacing them approximately 10 feet apart.