．—Wow! And what does your brother do? —He’s a painter．He ______ in France this month．He has an exhibition there

Allen is my brother. often takes dog for a walk.

Only when class began ____that he had left his book at home[ ]

It was at the Grand Hotel _______ the suspect was caught, _____ was quite beyond the expectation of the police

The research mainly deals with the difficulty the students have ______ their attention pm their study all the time.