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“ Have you visited the Science Museum?”
“ No, but I really wish I ___.”                     

Without electricity human life _____ quite different today.  

It's high time that we students ______ even harder at our lessons as the national entrance examination is coming nearer.

I ______ through that bitter period without your generous help.

—Where have you been?
—I was stuck in the heavy traffic. Otherwise I ____here earlier.

—How was the journey? Did you come back by plane or by train?
—For some reason, I came back by train. I ____ back by plane, though.

The boy insisted that he ＿＿ old enough, and ＿＿ the right to make his own choice.

The students have made a request that the reading-room ＿＿ open on Sunday afternoon.

I didn’t visit the TV station. But I do wish I 　　　 there.

Had it not been for the police’s help, Peter 　　　 his bicycle yesterday afternoon.