(2013·石家庄市高三二模)A smile       ________ the mother's face when the son walked onto      the platform to receive the prize.

 After that, he knew he could ________ any emergency by doing what he could to the best of his ability.

Clare has offered a _______ of $ 100 to anyone who can find her lost cell phone.

 The engine of the ship was out of order and the bad weather___the helplessness for the crew at sea.

(2012·江苏高考)Days later, my brother called to say he was all right, but ________ say where he was.