问题
选择题
---____ do you study for a math test? ---I study math ____ lots of exercises.
A．What, by doing
B．How, by doing
C．How, doing
D．What, doing
答案
答案：B
考察特殊疑问词的意思和介词， “what”什么“how”怎样，如何“By”通过。句意：你为了数学考试时如何学习的？我通过做许多练习学数学。故选B