Question

—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

Answer 1

D

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。