重写句子：Hockeyisasportwhichispopularinmanycountriesaroundtheworld.(simplesentence)
CharlesSmith,______wasmyformerteacher,retiredlastyear.
Itisimportantto________yourskinfromtheharmfulstrongsunlight.
名词解释：营养性缺铁性贫血
Itrainedhardyesterday,______preventedmefromgoingtothepark.
