I __________ a novel written by O·Henry(1862—1910) , a well known American short story writer last night, and I'll finish it another night.
I watched the plane go higher and higher until I lost _____ of it.
I usually take something to read when I travel by train _____I feel bored.
Out _____, with an apple in his hand.
Not until he met with the difficulty _______ the importance of group work.
The thief must have hidden somewhere in the _______ area.