Someone called me up in the middle of the night, but he hung up ______ I could answer the phone.
The book belongs ________ Tim.
We went to Hainan Island on May Day and had great fun ________ in the sea.
Our English teacher is very strict _____us and he is strict_______his teaching.
I hear someone ________ in the room now.
—Is there ________ in today's newspaper?—No.