I can make a cake. I could forget about chocolate yesterday. I can buy a lot of things now but yesterday I couldn't. I can cook lots of dishes.I could go out with friends last week. Last month I could buy this book but now this book is too expensive for me, so I can't buy it now
I can make a cake. I could forget about chocolate yesterday. I can buy a lot of things now but yesterday I couldn't. I can cook lots of dishes.I could go out with friends last week. Last month I could buy this book but now this book is too expensive for me, so I can't buy it now
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