求英语大神! we find it necessary that we pratise spe

求英语大神! we find it necessary that we pratise spe We all think it necessary and important that a citizen It's necessary / important / essential that we (should) clea It is necessary that we ___a foreign language. We argue that it is necessary that we should learn the ancie We found it was necessary to write down her addresss.请用：find We find ______ necessary to protect the earth.A.it B.this C. It is obvious that wherever we can find that 求find it necessary和lt is necessary的解释 为什么We find it necssary that we speak English中it后面不加is? it is necessary that we ___ fulfill the task in a week's tim Something that is necessary means we need it for a purpose o