The researchers set up a series of experiments in which volunteers eye-movements (19 atracked – bwere tracked) while they watched a nature documentary. The study showed that, even when the volunteers fast-forwarded ads, they could be influenced by brand images that appeared for only a fraction of a second in the center of the screen. Each brand image appeared on the screen for no more than a third of a second, so viewers concentrated on the center because it is difficult to keep ( a move – b to move – c moving) one’s eyes to the edges and back.
the ans is C ,why?
How do I recognize in a sentence which word to match?
If you can give tips so that I can deal with such phrases.
Highly appreciate their help and thanks.
shayben1234 it is difficult to keep ( a move – b to move – c moving ) one’s eyes The verb 'keep' takes the -ing form. Study catenative verbs to learn more about how one verb follows another. CJ
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shayben1234it is difficult to keep ( a move – b to move – c moving) one’s eyes
The verb 'keep' takes the -ing form.
Study catenative verbs to learn more about how one verb follows another.
CJ