问题
选择题
— Each of the students, working hard at their lessons, ______the book. — So have I.
A．is reading
B．has read
C．reading
D．reads
答案
答案：B
此题将主谓一致和时态结合在一起进行考查。上一句的主语为each of the students 是单数，再结合下文的回答so have I，由此，可知上句应该用完成时态。