It's difficult ______ at the back, so I don't like sitting behind the other students. [ ]

A. see

B. seeing

C. to see

D. sees

当某一年一国政府的预算出现赤字时，该国（）

A.总需求一定大于总供给

B.在未充分就业情况下将增加就业

C.将产生通贷膨胀的缺口

D.该国的货币必然贬值