The children all looked_______ at the broken model plane and felt quite_______.

Mr Hu, can you tell us how to learn math well?—Sure. But remember nothing can be learned _______ hard work. [ ]

______ takes me ten minutes ______ the picture.

Excuse me, Mum. When can we have dinner? —Not until it in half an hour.

Grandma often tells us stories after meals, but they are quite____.