The phrase "are expected to demonstrate" is correct and usable in written English.
It can be used in contexts where you want to indicate that someone is anticipated to show or prove a certain skill, quality, or behavior.
Example: "Students are expected to demonstrate their understanding of the material through a final project."
Alternatives: "are required to show" or "should illustrate".
Lack of clarity about this alters the expectation of whether ookinetes are expected to demonstrate classical foraging behaviour, such as random walks, tumbling or true chemotaxis to facilitate midgut exit (Berg, 1976), or follow a relatively simple (and energy efficient) strategy of moving along a straight line until they reach the epithelium.
Helena Smith, our Athens correspondent, tells me that military staff are expected to demonstrate later in the day.
To stay registered with the GMC, all doctors are expected to demonstrate their fitness to practise through gaining continuing professional development points every year.
Security fears have been raised about the Dalai Lama's appearance at Glastonbury as protesters around the UK are expected to demonstrate against the exiled spiritual leader.
Activists from dozens of opposition groups are expected to demonstrate this week across the country, but it is unclear how many people outside party structures will join them.
Another walkout is planned in Connecticut later this month, and on March 11, busloads of New York doctors are expected to demonstrate in Albany.
The Muslim Brotherhood and leftists are expected to demonstrate again this week, but most predictions are for smaller turnouts than in recent weeks.
In Britain, the Netherlands, Australia and many other countries, those applying for citizenship are expected to demonstrate their knowledge of their host society by passing an exam.
The effort will reach its peak on Thursday, when thousands are expected to demonstrate here against what they say is the unfair treatment of the black students, who have come to be known as the Jena Six.
Also, candidates are expected to demonstrate a capacity to contribute to collective defense, but there is no assessment to determine whether aspiring NATO members have made steps to adjust their intelligence, diplomacy, finance and militaries to contribute to counterterrorism.
People on a march against austerity cuts are expected to demonstrate outside Tesco's store on Regent Street on 21 June, with 600 people signed up to attend on Facebook.
