---Dad, could I have an MP3 like this one ?---Sure, we can buy ________ one, but as good as this.
The chemistry teacher asked the students ________ more attention _________the lab clean.
---- My best friend left me because I hit him on the face last night . ----______________ .You were so rude.
---- If you don’t know what the new words mean , ________- in a dictionary .
---- ______ you ever ______ aboard ?--- Yes, but only once.
---Why didn’t the little boy raise his hand in class today ? ---- Maybe the questions are ______ difficult for him_______ answer .