问题

It will be difficult ________ a robot_________ the same things as a person,
A:everything
B:nothing
C:something
D:anything;
B:nothing
C:something
D:anything;
正确答案是:
同类题型
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No words are strong enough to express our thanks foryour help— _____
There is plenty of snow outside. Put on your sweater.It is cold today.