Use of English

Testosterone levels [ ] to be lower among females than males, however they can rise.

I don't understand [ ] the underlying issue is.

As [ ] as the weather is concerned, our family loves it here.

Couples in a long [ ] relationship tend to be more stable than those in shorter flings.

Jeff and I are quite different. I prefer city life [ ] he prefers living in the countryside.

Men and women are often considered to be at odds with each other, in terms [ ] their behaviour.

As far as their hormone levels are [ ], when men and women are in love, they are quite similar

Although they are still fighting, they are showing [ ] of improvement.

It is a shame that many couples [ ] up due to problems and fights related to money management

Projects researching hormone level increases are already [ ] the rise