of all things
"Of all things," the woman said when the post office employee told her that her package was too large for delivery.
of benefit to (someone)
of interest (to someone)
of no avail
of one's own accord
of one's own free will
of the old school
off (someone or something) goes
off and on
thank one's lucky stars
pass off (something) as (something else) or pass (something) off as (something else)
tough row to hoe
find one's tongue
take off weight or take weight off
past (someone or something's) prime
serve (someone`s) purpose
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Interactive multiple-choice grammar assessment to preparation and check expertise.
Standard English Grammar Test
Standard English Grammar Test is an application to exercise your language knowledge.
Common Mistakes in English.
Homonym is, one of a group of words that share the same pronunciation but have different meanings.