Once a year, a race is held for old cars. A lot of cars entered for this race last year and there was a great deal of ____(excite) just before it began. One of the most handsome cars was a Rolls-Royce Silver Ghost____most unusual car was a Benz ____had only three wheels____ (build) in 1885, it was the oldest car taking part. After a great many loud explosions(轰响),the race began. Many of the cars ____ (break) down on the way, so some drivers spent ____(much) time under their cars than in them! A few cars____ completed the race. The winning car reached a speed of forty miles an hour-----much faster than any of____ (it) rivals. It sped downhill at the end of the race and the driver had a lot of trouble ____(try) to stop it. The race gave everyone a great deal of pleasure. It was very different____modern car races but no less exciting.

如图为菜豆幼苗和菜豆种子的部分及根尖结构示意图，请据图回答下列问题：

The boy often ____ (draw) pictures in the park.