.(江苏卷28). The retired man donated most of his savings to the school damaged by the earthquake in Yushu,________ the students to return to their classrooms.
He has been working too hard.______, he needs to have a rest.
—How does their factory________ their products? —Through a separate sales company.
He was too busily occupied _____ to the show.
We must _____ a new chair for the broken one.
My camera can be________ to take pictures in cloudy or sunny conditions.