HOC24
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Cho hình chóp S. ABCD với đáy hình tháng AD//BC. Cho M, N là hai điểm bất KỲ SB, SD
a, tìm giao tuyến (SAD) và (SBC)
b, tìm giao điểm MN và( SAC)
1 the film was so boring that she fell asleep
2 the furniture was too expensive for me to buy it
3 He isn't tall enough to touch the light
3 he had someone repair his car yesterday
4 I spent 3 months speaking to her
5. She advised me not to spend my weekend in the city
6. Because he is lazy, he fails the exam
6 . It's takes me 3 hours to drive from London to Edinburgh