against several days 什么意思?”提前几天”,有这么说的么

against several days 什么意思?”提前几天”,有这么说的么 “几天”的英语是several days,还是for several days? for several days改成since several days ago与什么时态连用 45days against L/C or deposit in several following days=in the following days吗? The parents ,whose son has been lost for several days,are s___ a lotN_____ is everything in the world ;you can never be against it.It was e___ twelve o'clock when he came back. several days=?several days=quite a few days还是=one day or two days Uncle Wang flew to New York several days ago.（对several days ago提问） 连词造句：sprout,several,you,see,the,can,days,in(.) several days ago的同义词只许三个单词 英语翻译Yuo ＿ ＿ the ＿ in several days. In several days,my tree has two _____. SAT：last for several days VS last several days第二种用法可以吗?SAT里算错吗? I'm going to plant trees in several days.还是I'm going to plant trees at several days. several days later means __?Aafter afew daysBbefore some daysCsome months laterDmany days late several several