下列句子,没有活用现象的一项是( )
A.以弱天下之民
B.却匈奴七百余里
C.以愚黔首
D.信臣精卒陈利兵而谁何
D项。
A.弱,使……弱;B.却,使……退却;C. 使……愚蠢
若规定运算a*b=a+b+ab,则(a*1)*2=______.
When I called you this morning, nobody answered the phone. Where ________?
A.did you go
B.have you gone
C.were you
D.had you been