If I had studied hard in the university, I( )things easy now.

A. take B. would have taken

C. will take D. would be taking

A. That B. This C. What D. It

A. That B. This C. What D. It

A. unless B. that C. before D. if

A. could show B. would show

C. could have shown D. showed

A. have B. had C. have had D. had had

A. have B. had C. have had D. had had

A. not to refer to B. don’t refer to

C. not refer to D. doesn’t refer to

A. discovery B. invention C. arrival D. origin

A. I see B. I think C. I’m concerned D. it goes