初三英语几个简单填介词的句子.
We'rebusystudying____abigtest.
Ifyoucan'tdoitbyyoursrlf,youcanaskothers___heip.
Don'tgetgoodgrades___copyingotherstudents'answers.
Ilikestudying___friends.Wecanhelpeachother.
Theyaretalking___howtostudywellatschool.
最好能有讲解.