American students do not stand up when their teachers (1) _________the room.

(5) _________general, high school tends to be strict, as college and university admission is very competitive.

Afterwards, students can (4) _________between general education and vocational high schools.

The basic primary school curriculum is generally divided into eight subjects : the Korean language, social studies, science, (3) ________, ethics, physical education, music and fine arts.

The basic primary school curriculum is generally divided into eight (2) __________: the Korean language, social studies, science,  [...] , ethics, physical education, music and fine arts.

The Korean education system basically consists of primary schools, (1) ___________schools, high schools, and colleges or universities, with graduate courses leading to Ph.D degrees.

Sun (5) _________the energy needed to drive photosynthesis, and some of the energy used to make the sugar is stored in the sugar molecule.

The process by which carbon dioxide and water are (4) _______to sugar and oxygen using sunlight is referred to as photosynthesis.