Sentence examples for have to be frequent from inspiring English sources

The integrations also have to be frequent, in the sense that it is likely that integration could have happened several times, in different biotopes.

Lessons do not have to be frequent and intense to be effective.

To qualify as research subjects, they had to be frequent Internet users and express an interest in learning about protecting their privacy online.

Screening also has to be frequent enough to prevent repeated infections because of the limited immunity after treatment.

We agreed that meetings between ourselves and eCW software developers had to be frequent and lengthy in order to solidify relationships and to make sure we had similar expectations of the final product.

It doesn't have to major trouble, like getting arrested, but it has to be frequent and it has to be funny.

You don't have to be a frequent flier to get one these days.

You don't have to be a frequent flier to be potentially affected by a highjacking.

But you do have to be a frequent, spontaneous or somewhat random traveler to use the site consistently.

You don't have to be a frequent flier to become a million-miler these days, at least on United Airlines.

Femoral fractures have to be considered frequent causes of hospital admission for the elderly.