题干
Jim comes to visit us from_time_to_time.That's always the happiest time for the family.
A：on time
B：sometime
C：at times
D：some times
答案(点此获取答案解析）
C
Jim comes to visit us from_time_to_time.That's always the happiest time for the family.
A：on time
B：sometime
C：at times
D：some times
