问题
选择题
----______has Tom been a doctor ? -----Since two years ago.
A．How soon
B．How much
C．How many
D．How long
答案
答案：D
题目分析：句意：汤姆当医生有多久了？自从两年前就是医生。A多久以后B多少，问价钱C多少，提问可数名词复数，D多久，故选D。
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----______has Tom been a doctor ? -----Since two years ago.
A．How soon
B．How much
C．How many
D．How long
答案：D
题目分析：句意：汤姆当医生有多久了？自从两年前就是医生。A多久以后B多少，问价钱C多少，提问可数名词复数，D多久，故选D。