Task 1 Complete each statement by choosing the appropriate answer from the four choices marked A, B, C and D.With a year’s hard work, he（）basic knowledge of English.

Task 1 Complete each statement by choosing the appropriate answer from the four choices marked A, B, C and D.With a year’s hard work, he（）basic knowledge of English.
A.has caught
B.has acquired
C.has required
D.has acknowledged
正确答案：has acquired