When I opened the door, I found my father sitting in his chair, completely _____ in the humorous stories he was reading.
Though money, his parents still managed to send him to university.
A small car is big enough for a family of three you need more space for baggage.
We can communicate people in every part of the world the Internet.
Stephen Hawking believes that the earth is unlikely to be the only planet life has developed gradually.
The plan just because people were unwilling to cooperate (合作).