皮皮学，免费搜题
登录
搜题
【简答题】
()是永续发展的必要条件
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】I bought a new house last year, but I ______ my old house yet, so at the moment I have two houses.
A.
did not sell
B.
have not sold
C.
had not sold
D.
do not sell
【单选题】I _______ the piano for two years. [ ]
A.
have bought
B.
will buy
C.
am buying
D.
have had
【单选题】---Have you been to the National Theatre? ---No, but I’ve bought two tickets for the concert to be given this weekend.
A.
yet
B.
even
C.
ever
D.
already
【单选题】When did you buy these new CDs? I them for two days.
A.
had
B.
have bought
C.
have had
【单选题】-----I bought this dictionary two weeks ago. ----You mean you __________ it for half a month.
A.
have kept
B.
have had
C.
have bought
D.
have taken
【单选题】— Is that a new car? — No, I _____ it two years ago. [ ]
A.
have
B.
buy
C.
have had
D.
bought
【单选题】Strange _______ his behavior may be, there is a very good reason for it.
A.
although
B.
even if
C.
that
D.
as
相关题目：