【语法题,Isupposeyouarenotserious,________?A.doIB.don'tIC.areyouD.aren'tyou这个什么情况下用don't________,Ishouldaskthemsomequestions.A.ShouldtheycometousB.IftheycometousC.WeretheycometousD.HadtheycometousS】
语法题,
Isupposeyouarenotserious,________?
A.doIB.don'tIC.areyouD.aren'tyou
这个什么情况下用don't
________,Ishouldaskthemsomequestions.
A.ShouldtheycometousB.Iftheycometous
C.WeretheycometousD.Hadtheycometous
Somecitieshavepassedlawsthatallowcoalandoil_____onlyiftheirsulfurcontentislow.
A.burningB.toburnC.beingburnedD.tebeburned
allowsbtodo和allowsbdong都可以的吧
为什么不选其他的,请大家给我个详尽的解释哈,