The first person to __________ the idea of nuclear fission ...

★ Adverbial Clause / If / Comparatives

The first person to __________ the idea of nuclear fission was a Hungarian physicist named Leo Slizard.

A. go out with

B. catch up on

C. come up with

D. fill up with

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She is ______ singer I’ve ever meet.

A. worse

B. bad

C. the worst

D. badly