Read the extract given below and answer the questions that follow. Then I walked down another flight to the second level, where the suburban trains leave from, ducked into an arched doorway heading for the subway — and got lost. That’s easy to do. I’ve been in and out of Grand Central hundreds of times, but I’m always bumping into new doorways and stairs and corridors. Once I got into a tunnel about a mile long and came out in the lobby of the Roosevelt Hotel. Another time I came up in an office building on Forty-sixth Street, three blocks away. Sometimes I think Grand Central is growing like a tree, pushing out new corridors and staircases like roots.1. Where did Charley get lost? A) on the third level B) after heading for the subway C) on the arched doorway D) on the suburban train station2. Charley’s statement ‘That’s easy to do’ means: A) it is easy to get lost in the third level B) it is easy to reach the second level C) it is easy to enter and exit the Grand Central D) it is easy to get lost in the Grand Central3. The word ‘bumping’ means the same as: A) omitting B) colliding C) missing D) skirting4. Why does Charley compare the station’s growth to a tree? A) it has many corridors and staircases B) because of its consistent extension C) it is an underground station D) it is very huge