There ---- (be)a pair of shoes under this big tree.这里是看pair吗?

There will be a sin(pai-a)cos(2pai-a)tan(-a+pai)/-tan(-a-pai)sin(-pai-a) 适当形式填空：1 ( )(there be ) three bottles of juice on the table2 Their cousin ( )(have) a pai r of sunglasses3 Kitty's coat is too old So she wants to ( ) (buy) a new one There( )(be)a football match,is there. Will there be a ____? Will there be a lift 化简:[sin(a+2pai)cos(pai+a)]/[sin(-pai-a)cos(-pai-a)] 化简：sin(2pai-a)cos(pai a)/cos(pai-a)sin(3pai-a) (sin(a-pai)cot(a-2pai))/(cos(a-pai)tan(a-2pai)) cos(a-pai)化简 sinX=A,pai ---a concert next saturday?a.there will be b.will there be c.there can be d.can there be 化简:sin(2pai+a)tan(pai-a)tan(2pai-a)/cos(-pai-a)tan(3pai+a) [tan(pai-a)cos(2pai-a)sin(-a+3pai/2)]/[cos(-a-pai)sin(-pai-a)]= sin(a-3pai)cos(pai-a) / cos(pai/2 - a)cos(pai+a)sin(pai/2 + a) may there be a be或者there may be a be这种语法可以吗 ________ a concert next Saturday? A. There will be B. Will there be C. There can be D. There are [sin^2(a+pai)cos(pai+a)cos(-a-2pai)]/[tan(pai+a)sin^3(pai/2+a)sin(-a-2pai)]=