____ the foreign student had learned Chi
题型：选择题
问题：
____ the foreign student had learned Chinese for several years in his own country, he could
hardly understand the local Chinese in China.[ ]
A. Since
B. As
C. Unless
D. Though
____ the foreign student had learned Chinese for several years in his own country, he could
hardly understand the local Chinese in China.[ ]
A. Since
B. As
C. Unless
D. Though