She regrets that she divorced him. She ______ stupid. A. is just B. was just being C. had just been D. would just be 282. The teacher told the students that the earth ______ round the sun. A. run B. runs C. ran D. was running 283. Floods and bad farming over the years ruined a land that ______ and made it miserably poor. A. had once been rich B. was once rich C. have once been rich D. was once being rich 284. At this moment the king, who ______ chess for some time, called out silence. A. was busy playing B. had been busy playing C. was busy to play D. had busy playing 285. The old man opened the mail which ______ that morning. A. had been delivered B. delivered C. is delivered D. had delivered 286. Six years ______ since I had begun studying English. A. passed by B. has passed by C. had passed by D. passing by 287. When he was in the countryside, they ______ in the middle of the yard, spinning, talking and laughing. A. were to sit B. sat C. were sitting D. would sit 288. He ______ articles for our wall-newspaper these 3 years, and he ______ about thirty articles. A. has written/has written B. has been writing/wrote C. is writing/wrote D. has been writing/has written 289. Where ______ my book? I can’t find it. A. you put B. you have put C. have you put D. did you put 290. It was not until then that I came to know knowledge ______ only from pract