—I saw Dave in the lift this morning. —Really? He _______ around here for a long time.
He must have been annoyed by something yesterday, _____?
Children _____ to difficult situations are better at handling those _____ tasks.
---Are you happy with this lab? ---Not a little. We can’t have _______.
What kind of things do people often buy during _____ Christmas and _____ Spring Festival?
The news of his death shocked the public, _______ to great concern about students’ safety at school.