The answer ________ the teacher,she asked the little boy to try a second time．

It would be a good idea to use a plastic bottle, ___cut off, as a container to grow young plants in.

 With a lot of difficult problems _______, the manager felt worried all the time.

 In the reading room, we found her seated at a desk, her attention ____ on a novel.

With dinner _____, the lady went on ____ some sewing.