Viết lại mỗi câu sau sao cho nghĩa không đổi
The work was hard enough for him to ask his friend for some help.
A.It is difficult for him to ask his friend help
B.He can't ask his friend help because the work was so hard
C.The work was so hard that he asked his friends for some help
D.The work was so hard so he asked his friend

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