I failed in the examination last term and only then ____ the importance of studies.
| A．I realized | B．I had realized | C．had I realized | D．did I realize |
— He seems to be lost in thought. Why?
— Because the film _____his memories of his childhood.
| A．calls up | B．picks up | C．brings up | D．takes up |
Americans _________sent a message to the world________ we have never been a collection of Red States and Blue States: we are, and always will be, the United States of America.
| A．that, \ | B．who, that | C．who, when | D．that, what |
—He should have been warned of the danger.
—_____, but he wouldn’t listen to me.
| A．Yes , he shouldn’t | B．So he should | C．So was he | D．So he was |
I’m not a little tired today after giving the room a thorough cleaning .I have never had ____ today.
| A．as tiring a day as | B．as a tiring day | C．tiring as a day as | D．day as a tiring as |
In face of failure, it is important to ______ a good state of mind.
| A．keep up | B．keep on | C．keep out | D．keep off |