[ Grammar ]
It’s important to take care of your teeth. You should […] by a dentist at least twice a year.
A. have checked them
B. have them checked
C. check them
D. having them checked
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Vocabulary and Grammar › ViewWhat is the primary cause of water pollution in urban areas, according to Adam, Aseel, and Lamar?
A. Industrial waste
B. Deforestation
C. Sewage discharge
Article › View
My favourite country is ___ Ireland, also known as ___ Republic of Ireland.
A. — , the
B. — , —
C. the, the
D. the, —
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A. was-decided
B. is-decided
Grammar › View
Personnel has had all the references _________.
A. be checked
B. checking
C. checked
D. checks