Our classroom is so clean．Who's cleaned it，Li Fei？
Sorry，I don't know．I think ______ did it before class．（ ）
A．somebodyB．nobodyC．everybodyD．anybody
_____ useful the information you've provided is!（ ）
A．What aB．WhatC．What anD．How
I'm going out． I'll be back _____ an hour．（ ）
A．atB．onC．inD．from
Father was so busy with his work that he had _____ time to read the newspaper．（ ）
A．someB．littleC．muchD．a bit of
_____ it rained a lot， we enjoyed our holiday．（ ）
A．AlthoughB．BecauseC．UnlessD．However
A baby's first month birthday is a special event in China and _____ with a special party．（ ）
A．celebratesB．is celebrated
C．was celebratedD．will celebrate