He enjoys a cup of coffee in the afternoon sometimes, but ______ he drinks tea.

Look! The students are playing on the playground. Some are running, some are playing basketball, ________ are watching.

Please sit_____ your chair and listen_____ the teacher. [ ]

Which of these two English books will you borrow? – I’ll borrowof them. Because they are very interesting.

When I turned to Tony for help, I found that the more he tried to explain, ___________.