As long as I can remember, ___________I called, his wife would answer the phone.
A:however
B:whenever
C:whatever
D:whichever
则W、X、Y、Z的金属活动性顺序为( )
拼读练习,填写四个声调的音节,反复读3遍。
q
ün
____
j
x
乐=57+58+59+102+105
快____乐
下列句子中关联词语使用错误的一句是( )。