问题
选择题
Half of the workers here ________ under 30 ________.
A．is;years
B．are;year old
C．is;years old
D．are;years of age
答案
答案：D
half作主语时，谓语要与half后面的名词保持一致。workers是复数，谓语也要用复数。
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Half of the workers here ________ under 30 ________.
A．is;years
B．are;year old
C．is;years old
D．are;years of age
答案：D
half作主语时，谓语要与half后面的名词保持一致。workers是复数，谓语也要用复数。