(1) If you have a headache for a long time, you should _______(寻求)medical advice.
(2) According to a widely accepted t_________, the universe began with a “Big Bang”.
(3) There are yellow leaves on the road, ______________(证明)autumn has arrived.
(4) A_________ the train, the cousins settled down in their seats.
(5)The beauty of West Lake is so ________________(给人印象深刻的)that it attracts tourists all over the world.
(6)As a _____________(物理学家)，he devotes most of his time to research work.
(7)With a little p_________, you can work out the problem.
(8) Unlike the Mars, life _________(存在)on the earth because of the continued presence of water.
(9)“If you b____________ well , I will take you to the party”, said mother to her son.
(10) The couple had an __________(争论)on which school their son should choose.