Though they are far away from school, the children wholive in mountains ______ go to school on foot.

(2013·河南豫西五校高三质检)To her disappointment, what she had devoted herself to ________ in nothing but failure

ou please also state your earliest deliverydate, your terms of payment, and discounts for regular _______

下列句子中，没有语病的一项是

Amazing! You _____ have won the first prize in the national English speech contest!I’m lucky that all my efforts have finally paid off.