单选题Our company ______ Metro Messenger Service since 1998.AuseBusedChad usedDhas been using
单选题
Our company ______ Metro Messenger Service since 1998.
A
use
B
used
C
had used
D
has been using
参考解析
解析：
某一动作从过去某个时间起一直持续到现在，用现在完成时。选择D。
某一动作从过去某个时间起一直持续到现在，用现在完成时。选择D。
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