(2013·北京四中高三质检)There is________as a free dinner in this world.As the saying goes，“No pains，no gains.”

(2013·河南豫西五校高三质检)Helen has just heard the news from her father ________ her boyfriend David will come back soon. (2013·河北普通高中高三质量监测)Lucy has changed a lot since she got her new jobRecently she ________ her work quite well (2013·北京东城区高三教学统一检测)He jumped out of bed and ran to the door to see ________ the parcel was for 党的十九届四中全会于年在北京召开（） (2013·哈师大附中高三二模)If only I ________ more confidence in the English speech contest held last week! (2013·黑龙江四校高三联考)The teacher has to ________ the two students as they are always talking in class. (2013·河北普通高中高三质量监测)________ I couldn’t fully understand what he wanted to show in his paintings, I thought his works were quite impressive (2014·合肥高三质检)________ some people claim they can predict the future，there is no scientific basis behind it. (2014·北京四中期中)The children________very well last night and the audience were attracted by their play (2014·兰州高三质检)Our country is developing at an amazing speed，which is________makes me feel so proud (2014·北京四中3月模考)It is well known that knowledge is________treasure house，but practice is________key to it (2013·北京东城区高三教学统一检测)In his speech, he said that it was his primary school teachers that he was fond of ________ influenced his whole life. (2013·哈尔滨四校高三统一检测)Look! There are so many mistakes in your composition. You ________ have fixed full attention on it. (2013·哈尔滨四校高三统一检测)In fact fuels we burn and plant food we eat ________ their chemical energy in the form of heat. (2013·哈尔滨四校高三统一检测)The old man often looked back on the past days ________ he worked hard to make a living. (2014·厦门高三质检)The worker earned little money a month，so he had to________only fast noodles. (2013·安徽师大附中高三七模)Don’t use water to put out the fire if oil catches fire. As is known, oil ________ float on water. (2013·哈尔滨四校高三统一检测)Williams shows some challenging means ________ diners at their mystery lunch on Sunday might eat the special dish. (2013·北京东城区高三教学统一检测)—Mum, I’m tired.—Well, if you ________ go to bed after midnight every night, what do you expect? （福建福州八中高三质量检测，26）Seldomas lonely as now though I have been living in Fuzhou for more than 20 years.