【简答题】Choose the correct answer. 1) A day or two _____ enough. ( is / are) 2) His family ______ waiting for him. (is / are) 3) Neither you nor they _____ in fault. (is / are) 4) The po...
【简答题】完形填空。 Today the problem of environment has become more and more serious. Every day, every hour, the air, forests, soil, oceans and fresh 1 are becoming dirtier and dirtier. There are two 2 for the pro...