This project requires close teamwork. Willbe achieved unless we work well together.

Which word has the sound /u:/

Studies have shown that 45 percent of reptile species and 24 percent of butterflies in these countries are in danger of ________.[ ]

er Li Keqiang delivered a speech at the conference, _________ university graduates to start their own business.

As far as I know, our manager has already had the matter ________， which we can know from his relaxed expression.