In the following words, which underlined（下划线的）letters have a different sound from the others?
| A． |
birth |
B． |
either |
C． |
earth |
These machines cut grass．（ ）
A．are used to．B．use to
C．are used forD．use for
Do you know the boy is drawing a picture over there？（ ）
A．whomB．whatC．whoseD．who
﹣ It's hot today， isn't it？
﹣Yes，it is．Why not your jacket？（ ）
A．take careB．take offC．take placeD．take after
I think English is as ________as Chinese．（ ）
A．interestedB．more interesting
C．interestingD．more interested
Bingbing is weak carry the heavy box．（ ）
A．too； toB．to； tooC．so； thatD．such； that