It will be three days __________he ________back from his home town

Will it be a long time _______ I come for the pictures ? -No．It _______ be ready by 3:00．[ ]

He finished ________ the book and returned it to the library.

语语言知识运用For the ______ of those who weren’tlistening the first time, I will repeat the question.

Barack Obama delivered a speech to 500 local youths during his visit to China, many of _______ were from Fudan University and Tongji University