题目

I would be sitting in a comfortable office now if I             more energies to my study instead of being crazy about going online at college.  A. devoted      B. would have devoted  C. were to devote     D. had devoted   答案：D19．如图，E、F分别是矩形ABCD的边AB、BC的中点，连接CE、AF，设CE、AF相交于点G，则S四边形ABGD：S四边形ABCD=2：3．