问题
选择题
Either Sam or Tom __________ an exam at the moment.
A. are having B. is having C. were having
答案
答案：B
在either…or句型中，谓语用就近原则，再根据at the moment 表示此刻是现在进行时时态的标志，故选B
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Either Sam or Tom __________ an exam at the moment.
A. are having B. is having C. were having
答案：B
在either…or句型中，谓语用就近原则，再根据at the moment 表示此刻是现在进行时时态的标志，故选B