—Do you often go fishing at weekends?—Not often，I only go fishing.A. at one timeB. all the

—Do you often go fishing at weekends?
—Not often，I only go fishing .
A. at one time
B. all the time
C. at a time
D. from time to time

A. at one timeB. all the timeC. at a time(答案→)D. from time to time解析：考查介词短语。at one time曾经；all the time始终；at a time每次；from time to time有时。由句意可知D项正确。

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