(选合适的词)事務所は(あれ、あの、あそこ)です。
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(选合适的词)すみません、電話は(だれ、何、どこ)ですか。
16. What is the purpose of the video library?To help people improve theirabilities.
17. What problem may people have when using the library for the first time?They may have difficulties understanding .
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