Both of my brothers are now married ，so I have two_____.
A、sister-ins-lawB
“名词+副词/介词”或“副词/介词+名词”的复合名词，单数变复数时，只将中心名词变复数。如：on-look→on-looks;brother-in-law→brothers-in-law.
William has cut his smoking_____to five cigarettes a day.
The driver pulled_____at the traffic lights.
I ‘ve been telling you_____not to do that ，but you neve listened to me.That ’s why you gotinto trouble.
_____alltherepresentativesstillnotthere，themeetingwaspostponedforseveralhours.
I‘vebeentellingyou_____nottodothat，butyounevelistenedtome.That’swhyyougotintotrouble.
