surround vt. __________ surrounding adj.__________ surroundings n. ____________
be surrounded by/with
①.Some insects take on the color of their ___________ to protect themselves.
surrounding B. surround C. surroundings D. surrounded
②.The teacher, _______ (surround) by the students, is telling a thrilling story.
③.The students, _______ (surround) their teacher, are listening a thrilling story.
④. The town’s water comes from the ____________ hill.
