1¡¢There are only twelve ______  in the hospital.
A£®woman doctors    B£®women doctors
C£®women doctor       D£®woman doctor
2¡¢Mr Smith has two _______  , both of whom are teachers in a school.
A£®brothers-in-law    B£®brother-in-laws
C£®brothers-in-laws    D£®brothers-in law
3¡¢——How many ______  does a cow have? ——Four.
A£®stomaches B£®stomach  C£®stomachs   D£®stomachies