12.1 can, may:negative 1. In such situations, tourists to these countries cannot / may not want to engage in a more direct relationship with the locals. 2. This paper analyses why many African Americans cannot / may not be participating in clinical trials. 3. We begin from the premise that what you see cannot / may not always be what you get. In fact, in some cases 4. We believe that sequence identity cannot / may not be sufficient to guarantee that the right species is indenti fi ed. 5. However, the alcohol content of wine cannot / may not possibly be the sole explanation for this phenomenon. We believe that there are at least three other feasible explanations. Firstly 6. The advice contained in this document cannot / may not be suitable for your situation. In addition, some content that appears in this document cannot / may not be available in electronic formats. 7. It is possible that an increase in inflation cannot / may not necessarily damage the economy. 8. These levels correlate with brain damage but certainly cannot / may not be attributed to brain damage alone. 9. We have designed and developed a walking toy that cannot / may not stop moving unless switched off. 10. This drug can be prescribed to patients who cannot / may not be treated with conventional medicines due to allergies and side effects. 11. I regret that Ii bcannot / may not accept your invitation at the present time because