11. The little boy likes plane models very much. He wants to be a _______and fly a plane into the sky when he grows up.
The sentence needs _______ once more.
The computer centre, _______ last year, is very popular among the students in this school.
Rather than _______ on a crowded bus, he always prefers _______ a bicycle.
_______a reply, he decided to write again.
There seemed nothing else to do but ______ a doctor.