How can i memorize english words better?

First, say the word to yourself. Maybe, if you do this, it will sound like a word you already know. Sometimes you might know a word in your head without knowing what it looks like in print. So, if you match up what you already know and what you read- you will have the word.

Hope it helps

can you provide the possible answers

answer: b) bubbling its way

explanation: an adjective is a word or a group of words that modifies a noun (name, thing, place,

in this case, the first option "to heartily enjoy" isn't describing or modifying any noun, the third option "hiking along merrily" is describing an action but it doesn't modify any noun, the last option "beside us" is just a preposition that indicates position, so the correct answer is the second one: "bubbling its way" because it is modifying the noun "stream".