-a+b-c+d=_a+b-( ) 括号里填什么?要做啦 还有-a+b-c+d=-( )

-a+b-c+d=_a+b-( ) 括号里填什么?要做啦 还有-a+b-c+d=-( ) We buy a book _a good price A on B to C for D at单选哦 He has a large family to _A keep B grow C raise D hold _a bike is a good way to exerciseA:Riding B:Driving C:openging D:starting His wish,_a doctor,came ture.A.coming B.come C.to come D.came, who's the little girl _a yellow hat? A.in B.of C.on D./ _a nice storybook!A:Where B:How C:What That cow _a calf .A:is B:have C:has i can _a butterfly a.do b. make c.look (a+b-c-d)(a-b-c+d)=中括号（ ）+（ ）中括号（ ）-（ ）中括号 (a+b-c-d)(a-b-c+d)=中括号（ ）+（ ）中括号（ ）-（ ）中括号 There _a piece of land in the middle of the sea.A.be B.is C.am D.are let's cut the birthday cake _a bread knife.A by B with C over D on You should go over the books before _a test.A.you taking B.take C.taking D.you took He went to see his teacher _a cold evening.(A.in B.on C.at D.with) What he said doesn't _A reasonable B have reason C make a sense D make any sense ( )My broyher wants to be a teacher when he _A.will grow up B.grew up C.is growing up D.grows up ( ) You should keep the tank _A.clean B.cleaned C.cleaning D.to clean( ) If a dog is hungry,he _A.barks B.will bark C.bark D.barking( )My dogs are friend (a-b)-(c-d)=a-( ) 括号里填?