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【多选题】
下列物质中可作为路易斯碱的是( )A.
Ni 2+
B.
H 2 O
C.
F －
D.
NH 3
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反馈参考答案：
举一反三
【单选题】He used to live here, but now he lives here.
A.
no longer
B.
doesn't longer
C.
not
D.
any longer
【单选题】—Jimmy isn't here. Where is he? —He hurt his arm on the playground just now. He ______ to the school doctor's. [ ]
A.
has gone
B.
has been
C.
goes
【简答题】米莉在信上提到,下周一她将要和几位朋友去____作小规模的野餐。
【单选题】He moved here ten years ago. Now he _____ here. [ ]
A.
used to live
B.
used to living
C.
is used to living
D.
is used to live
【单选题】. He ____ in the north, but now he ____ here.
A.
used to live; is used to the life
B.
use to live; is used to live
C.
used to living; is used to living
D.
used to live; is used to live
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