问题

ter how hard it is, we’ll keep______until we make it.
A:failed
B:failing
C:tried
D:trying
B:failing
C:tried
D:trying
正确答案是:
同类题型
Mr. Green told ustoomuch timereading novels.
With all the magazines he needed _______, he left the library happily[ ]
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Every year, quite a lot of farmers______ to big cities to find jobs.
To our ______, the result of the experiment is muchbetter than we expected.