Da Shan is _________ at Chinese. He can speak Chinese very _________.

In class the students put their books_____ their desks. [ ]

Many students in this school make __________ a rule to come to the evening classes even on Saturdays and Sundays.

On summer nights, we often go to sleep the window open.[ ]

To be honest, ＿＿＿you’d like me to offer?