An expert once said that humans ________ have serious problems in the future if they ________ treat animals well. A. would, didn’t B. would, wouldn’t C. will, don’t D. will, won’t 答案:A 【解析】句意:一位专家曾说,如果人类不善待动物,将来会有严重的问题。考查宾语从句和if引导的条件状语从句。第一个空所在句子为that引导的宾语从句,主句谓语动词said为过去式,从句的谓语动词应用过去时态范畴之内的任一时态,故C、D选项可排除。第二个空所在句子为if引导的条件状语从句 听对话,根据对话内容,判断第1-2小题所给句子的正误。正确的用A表示,错误的用B表示。每段对话读两遍。( )1. Mike likes London very much.( )2. Mike is coming back next Monday.