A-A+
The Bank of Citizens assured its customers tha
问题详情
The Bank of Citizens assured its customers that it_____current levels of quality service despite the proposed merger.
A．maintaining.
B．maintain.
C．will maintain.
D．to maintain.
参考答案
正确答案：C
解析：句子中说到的是将来的事情，应该使用动词的将来时。因此本题选择will mantain。
