问题
选择题
________ a difficult situation, so you should send him a message and give him some advice.
A．As he is in
B．He is in
C．Being in
D．He being in
答案
答案：B
so(因此)是并列连词，引出一个表示结果的分句，前面应是一个表示原因的分句，而无需再用连词，排除A；C和D又不是句子，也错了。