1.This exam is a real c_____.Please study hard for it.2.Most children can not c___ on one thing fo
题目
1.This exam is a real c_____.Please study hard for it.2.Most children can not c___ on one thing fo
1.This exam is a real c_____.Please study hard for it.
2.Most children can not c___ on one thing for a long time.
3.Don't you remember ____(borrow) 100Yuan from me?
答案
challenge
这测试是个挑战.
concentrate on
专注于……
borrowing
remember doing=remember having done
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