Is this the very dictionary one ____ new words now?

Is this the very dictionary one uses to look up new words no is this the very material one plastics now? ____the boy ____(write)the new words now? I hear this dictionary is very ____ for us students A dictionary is a very ____(use) tool in ____(learn) a new l The dictionary is very ____(use) to me This is the very reason ____ he explained to me just now.A.w 一句英语的时态题Sam is looking up words in the dictionary now,becaus This dictionary is _____ to me,but that one is ____ All the new words ___ up in the dictionary yet. One way to understand thousands of new words is to gain ____ 英语翻译The dictionary is abundant in sunny words,healthy words,