I have $50，but that isn't ________ enough for my journey fare.

My mind wasn't on what he was saying，so I'm afraid I ________ half of it.

There is a new problem involved in the popularity of private cars ________ road conditions need ________.

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

(2013·长沙二模)Jim was about to stand up when he saw something ________ near his feet. It's a snake!

(2012·安徽高考)I remembered ________ the door before I left the office, but forgot to turn off the lights.

(2012·重庆高考)We're having a meeting in half an hour.The decision ________ at the meeting will influence the future of our company.

(2011·上海高考)Today we have chat rooms, text messaging, emailing ... but we seem ________ the art of communicating face­to­face.

．________ several important decisions based on emotion instead of reason, he felt bitterly regretted.

(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.