Look! The students are playing on the playground. Some are running, some are playing basketball, ________ are watching.
---As a student, I can’t afford __________ a new mobile phone.
English is not easy, but I never __________.
---Your help made __________ for me to work out this problem.
---I don’t think _______ Maths is easy.
---Thanks for _________ the new chairperson.