It is common practice a battery when it still has some life in it
A.to charge
B.charge
C.charged
D.having charged
第1题
A.many
B.much
C.more
D.most
第2题
A.work
B.be working
C.worked
D.working
第3题
A.which
B.that
C.whose
D.it
第4题
A.To be supported
B.Having supported
C.Supporting
D.Supported
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