选择一个正确的答案.
1.Ithinkthatthefirstdayofspringis______.
A:twenty-twoofMarchB:twenty-secondonMarchC:twenty-twoinMarchD:thetwenty-secondofMarch
2.Theearthis_______thesizeofthemoon.
A:49thtimesB:49timesC:49timeD:fourty-ninetimes
3._________studentsareplantingtrees.
A:SeveralhundredsB:Severalhundred
4.________tofinishquickly.
A:NoeverystudnetswantsB:NoeverystudentswantC:NoteverystudentswantsD:Noteverystudentswant