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【单选题】

Mary had to wok at evenings and weekends. Only in this way _____ able to complete the report
by the deadline.
[ ]

A.
was she
B.
she was
C.
had she been
D.
she had been
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参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】下列选项中不属于生物防治的是( )

A.
利用苏云金杆菌防治棉铃虫
B.
利用白僵菌防治松毛虫
C.
用黏蝇纸捕捉苍蝇
D.
瓢虫捕食蚜虫

【单选题】In the school where I study English ____.

A.
is there
B.
has no good teachers
C.
is taught
D.
is the most beautiful