We _____friends since three years ago. 这里要写become 应该怎么填?

We _____friends since three years ago. 这里要写become 应该怎么填? 用am / are /is/am not /isn't/aren't 填空：The and I _____friends. we chose south hill to have the picnic------- the beautiful viewA.because B.because of C.as D.sinc Is it always easier _____friends than to keep them?A.making B.make C.to make D.made SinA+SinB+SinC SinA+SinB+SinC 如何计算sinc函数 sinc interpolation是什么意思 为什么sinC=1? _____friends are nice ________their parents A All my;to B My all to C All my;with D my all with _____friends Betty had made there were all invited to her birthday partyA.Few of B.Few C.The few D.A few The boy is new in our class,so he has _____friends now.A few B a fewC little D a little matlab中sinc(t)和sinc(t.')有什么区别? 在△ABC中,tanAtanB=1,求sinC+sinC sinc函数的傅里叶变换是什么 在△ABC中,已知sinC+cosC=1-sinC/2,则sinC= 已知sinC+cosC=1-sinC/2求sinC的值 有关many more 和 much more 的If you were _____friendly to people ,you would have _____friends.A.much more ,many more .b.much more ,much more .有权威人士吗？