2006年的二月份只有28天.
once, twice, three times, five times, seven times, never
play sports
eat fruit
eat vegetables
Sam
____
six times
Judy
four times
Lily
three times
非洲的乞力马扎罗山位于赤道附近,山顶却终年被积雪覆盖,其主要影响因素是( )