อยากได้แบบฝึกหัดฟรีนับพัน (ไม่มีสิ่งรบกวนเลย)?
Quiz 1: 课程相关 Course-related
Hi, my drag and drop worksheet has some problems. The "drag" do not reflect the part I have encased during my edit. It looks find on the computer, but no on phone. Please assist. Thank you!
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Quiz 1: 课程相关 Course-related
It happens sometimes. Wait 2-3 minutes and reload the page