下列文学文化常识的阐释中不正确的一项是（ ）

Look! The boy in the white shirt ___be Tom. –It ____be him. I saw him enter the library just now.

Many experts seem to agree that certainlimit should be set on consumptionof cars to ease air pollution.

you missed the lecture on nuclear pollution.— I____ it, but I was busy preparing for a job interview.

They asked the government to make ______clear to the public ______ they did was right