There ___ some milk here yesterday. A.is B are Cwas Dwere Here ___ three hundred dollars for your work this month. Ais Bare Cbe Dwere -You must ___ what I have done for you before you leave. -Well,how much does it ___?Is 100 dollars enough? Apay for ,cost Bpay,spend Cspend,pay for Dpay ,cost ⊙﹏⊙b汗 参考答案的1A 2A 至于第3没答案 2理解了 但1、There be 结构表示客观存在的事实,请问是不是都要用一般现在时呢?