My PE teacher often teaches us how to play ________football.

hey met, they stopped and saidhello to_______.

You _____come to his office. Ourboss won’t be back until next week.[ ]

27. Yang Liwei was picked from the 14 candidates for the Chinese space adventure and became China’s first astronaut _______ his great efforts.

Be careful _toofast, or there _be an accident.