Was recommended this software from Bettergrades E-tutor (www.bgetutor.com) for primary school students. Over 30,000 quizzes covering English, Math and Science.
It's abt USD 15 for 1,500 - 3,000 qtns, depending on the level. Seems like a good deal?
There are free programs to practice. Wonder if anyone would try the trial programme and comment? Thanks!