Ifyouwanttobuythisdress,you’dbetter　　　firsttomakesureit...

問題詳情：

If you want to buy this dress,you ’d better 　　　 first to make sure it fits you.

for it     it off   it up    it on

【回答】

D　

知識點：動詞和動詞短語

題型：選擇題