Two Awoman teachers and four Bgirl students Cwere praised Dat the meeting yesterday.A．B．C．

Six minus two equals four.（英译中)

Pigeons can carry messages for about ______.A．two weeksB．four weeksC．two yearsD．four years

What is the probable relationship between the two speakers？A．Teacher and student.B．Husband

A．Two nights.B．Two days.C．Four nights.D．Four days.

听力原文：Their teacher says the two girls are studying neck and neck now though they come

A．One.B．Two.C．Three.D．Four.