问题

Look! They _____ hard _____ the farm.
A:Workin
B:workingon
C:is workingat
D:are working on;
B:workingon
C:is workingat
D:are working on;
正确答案是:
同类题型
think it’s a good idea to make friends with your students– ,I do. I think it’s a great idea.
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Would you like _______________ — ________, but I’m too busy now.
re information on how to apply for scholarship,______ our Web site at www.edu/scholarship.