we an busy___ (种植）trees on tree planting day

we an busy___ (种植）trees on tree planting day from monday to friday,we're busy___(work)用适当形式填空 TR they always have fun_(talk)to each other2._（unfortunate）i don't have enough money to travel abroa3.—of us went to see the basketball game because we had an art classA.one B.none C.some D.no one4.lucy and lili enjoyed themselves on the school tr 缺词填空（十万火急）Mulan is a Disney cartoon.However,it's about an old Chinese legend.We all k____(1) about Mulan who dresses herself up as a man to join the army instead of her father.Although she always gets herself into trouble,being tr tr（）ed 中间填什么 一个线性代数问题：证明AB-BA不等于E设A、B为两个n阶矩阵,证明：AB-BA≠E.但是你的证明不正确，因为Tr（AB）=Tr（A）*Tr（B）不成立，例如，取B=E，则Tr（AB）=Tr（AE）=Tr(A),而Tr（A）*Tr（B）=Tr（ We can smell an orange.(对 an orange提问） 求助一道关于 迹 的线代题,证明tr(AB)=tr(BA） We have an umbrella.否定：（ ） A.We don't haveWe have an umbrella.否定：（ ）A.We don't have an umbrella.B.We don't have umbrella.C.We haven't an umbrella.D.We have no umbrella. Are we an item We must d____ a hole large enough fpr a tr ee,And then we can put the tree in. We should take a coures before we got the job a 后面填一个单词,tr 带头的 r（A）与tr（A）区别线性代数 TR是什么意思 tr是什么意思 we have an interesting thing（）（tell）you We are planning ＿（have）an English party.