if you want to answer - you should raise your hands , if your teacher talks - you should letting carefully , when class starts - we should sit down , if you need to use the bathroom  - Say may I go to the bathroom?,

द्वारा

लीडरबोर्ड

दृश्य शैली

विकल्प

टेम्पलेट स्विच करें

ऑटो-सेव पुनःस्थापित करें: ?