请根据答句写出问句。 1. A:_____________________________________ ? B:No, I can’t. 2. A:_____________________________________ ? B:It was windy last Saturday. 3. A:_____________________________________ ? B:I went to Shanghai on vacation. 4. A:_____________________________________ ? B:Mr Smith works in a bank. 5. A:_____________________________________ ? B:Because they are very cute.13、下列各组中的物质发生反应后,溶液质量减少的是( )A、铁和稀硫酸B、氢氧化钾溶液中加入稀硝酸C、硫酸铜溶液中加入铁片D、氢氧化钙溶液中加入碳酸钾溶液