They were surprised that a child should work out the problem____ they themselves could not.
There was never any time for Kate to feel lonely, ________she was an only child.
Peter and Bob both did well, but Peter is ________________of the two.
______________ about wild plants that they decided to make a trip to Madagascar for further research.
--What can I do for you? --I am looking for a birthday gift for my sister, _______at a proper price but fashionable.
-- Could I make it 14th July? --_______________________.