单项选择题

The country’s wealth comes chiefly from its ______.

A. herd of cattle
B. herd of cattles
C. herds of cattle
D. herds of cattles
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单项选择题
MY aunt poured two ______ into his pie mixture.
A. cup waters
B. cupfuls of water
C. cupful of water
D. cup water
单项选择题
There are a lot of ______ in Xinhua Children’s Hospital.
A. woman doctors
B. woman doctor
C. women doctors
D. women doctor
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