Which word doesn't have the same stress （重音） as the others？（ ）
A．discoverB．habitC．guitarD．suppose
______American people and British people speak the same language，their cultures are quite different．（ ）
A．SinceB．IfC．AlthoughD．Because
Students_______enjoy the colorful school life if they study at home instead of going to school．（ ）
A．mustn'tB．can'tC．mustD．can
Now all Chinese couples______to have two children．（ ）
A．allowB．allowed
C．are allowedD．were allowed
Water is important to______，so there are many water festivals around the world．（ ）
A．everyoneB．nobodyC．somebodyD．something
Did you call Jenny？
Oh no，I forgot．I_____her right away．（ ）
A．calledB．have called
C．callD．will call