问题
选择题
—— I haven’t seen Johnson these days.
—— I think she _______ a conference in Beijing, but I’m not sure.
A．should be attending
B．might be attending
C．could have attended
D．must have attended
答案
答案：A
本题考查情态动词。句中should表示“应当”之意。句意：——这些天我没有看到Johnson。——我想她一定在北京从句会议，但我不确定。