问题补充：
The car is quite small, if you have children.
A. immediately
B. luckily
C. especially
D. finally
答案：
A. immediately
B. luckily
(答案→)C. especially
D. finally
解析：句意：汽车相当小。尤其是如果你有孩子在车上。immediately立刻， luckily幸运地，especially成功，finally终于。根据语境可知车身非常小，如果加上孩子就更感觉小了，故选C.
