Question

It’s high time that we students_______ even harder at our lessons as the national entrance exam..

It’s high time that we students_______ even harder at our lessons as the national entrance examination is coming nearer. A．work B．will work C．worked D．have to work

Answer 1

C

考查句型：It’s high time that+主语+过去式/should do ，should不能省略。所以选C。