阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式，答案写在答题卡上。

Many schools started online courses for students to study at home on account of the spread of COVID-19. 【小题1】, the outcome turned out to be not satisfying, because the online education required teachers to have classes using mobile phone software and properly interact with students, which proved to be 【小题2】challenge for many teachers.

Some teachers discovered they left the microphones off before finishing the online courses, and others were frequently interrupted by 【小题3】 (they) young children's shouting or crying. Sometimes they had to repeatedly reconnect to the platform due 【小题4】poor Internet connection , 【小题5】annoyed both the students and the teachers. Some schools offered online courses for each subject including sports. Teachers found it awkward   【小题6】 (give) instructions online because many children did not have enough space to move. Some parents complained that they had to join several different chat groups of different 【小题7】 (subject) . They also hated to accompany their children taking online courses just to make sure their children were 【小题8】 (real) concentrated instead of 【小题9】 (play) video games.

The Ministry of Education said on Wednesday that it 【小题10】 (recommend) that online courses should also be linked to infection prevention and psychological health guidance .