问题

We students should treasure the short senior school’s study life of three years. Once ________, the opportunity can’t get back.
A:losing
B:was lost
C:lost
D:being lost
B:was lost
C:lost
D:being lost
正确答案是:
同类题型
I couldn’t do my homework with all that noise ________. [ ]
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______ an important role in a new movie, Andy has a chance to become famous[ ]
A number of boys singing songs. The number of boys getting larger and larger.
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