15.Working alone,R can complete a certain kind of job in 9 hours.R and S,working together at their respective rates,can complete one of these jobs in 6 hours.In how many hours can S,working alone,complete one of these jobs?(A) 18(B) 12(C) 9(D) 6(E) 3

15.Working alone,R can complete a certain kind of job in 9 hours.R and S,working together at their respective rates,can complete one of these jobs in 6 hours.In how many hours can S,working alone,complete one of these jobs?(A) 18(B) 12(C) 9(D) 6(E) 3 old man enjoys___again by working in the factory because heThe old man enjoys___again by working in the factory because he hates ____while staying alone at home all day long.A himself,that B himself ,it C it.it Dit,that We (r ) enjoy working on the farm working Working Don’t leave her.at such a .village.She will feel..A.alone,alone,lonely B.alone; lonely,alone C.lonely,lonely,lonely D.alone,lonely,lonely The old man lives ________,but he never feels _______.A.alone;alone B.lonely C.lonely D.alone;lonelyB.lonely;alone C.lonely;lonely 英语翻译three pipes a ,b and c can fill a tank in 6 hours .after working at it together for 2 hours .c is closed and a and b can fill the remaining part in 7 hours .the number of hours taken by c alone to fill the tank is She doesn't feel____though she is___. A.alone,lonely B.lonely,lonesome C.lonely,alone. D.alone,lone ( )1.--- Is your sister afraid _________at home alone?----Yes.A.to staying B.to stay C.staying D.of stay( )2.At last we finished the model plane by _______in a group.A.works B.worked C.working D.to work( )3 .Listen!The children are reading English in The little girl was afraid of staying ______ in the ______ house.A.alone alone B.alone lonely C.lonely loney D lonely alone. Sam likes music very much.He lives___ ,but he never feels ___ .A.alone;lonely B.alone;alone C.lonely;alone D.lonely;lonely My grandma lives in a (n)_________ house,but she doesn’t feel ________.A.alone,lonely B.lonely,alone C.lonely,lonely D.alone,alone Her mother was out.She stayed at home ________,but she didn't feel ________.A.alone,lonely B.lonely,alone C.alone,alone D.lonely,lonely Kate's grandmother lives in a house ____,but she does't feel _____.A.alone;alone B.lonely；lonely C.alone;lonely D.lonely;alone The old man lives ______,but he doesn't feel______.A.alone ;alone B.lonely,alone C.lonely;lonely D.alone;lonely Do you feel ______ when you are at home _____?为什么咧，为什么这么填呢？A.alone,alone B.lonely,lonely C.alone,lonely D.lonely,alone Tom lives_____.These days he is feeling____without his only friend…the dog.A.alone;lonely B.alone;alone C.lonely;alone D.lonely;lonely