在家休息做习题，不方便请教老师就来吧里咯，还请高手们赐教~小女子感激不尽。。
1.she is glad to hear her mother will be back in_____.A.one day or two B.a day or two C.one dat or two days D.one and two days答案是B，A为什么不对？
2.____ wheel is thought to be ___invention of _____first importance in human history.A.A,the the B.The,an,the C.A,an,the D.A,an,/答案是C，B呢？
3.Student or teachers can participate in a short journey to lovely beaches around the island at regular ____.A.gaps B.rate C.length D.intervals答案是D，A呢？
4.It took then long ___to finish all their homework.A.hours B.hour C.times D.time答案是A，C呢？
5.The father writes in his will that every son and daughter ____a share of his property.A.has B.to have C.having D.have答案是A，D呢？
1.she is glad to hear her mother will be back in_____.A.one day or two B.a day or two C.one dat or two days D.one and two days答案是B，A为什么不对？
2.____ wheel is thought to be ___invention of _____first importance in human history.A.A,the the B.The,an,the C.A,an,the D.A,an,/答案是C，B呢？
3.Student or teachers can participate in a short journey to lovely beaches around the island at regular ____.A.gaps B.rate C.length D.intervals答案是D，A呢？
4.It took then long ___to finish all their homework.A.hours B.hour C.times D.time答案是A，C呢？
5.The father writes in his will that every son and daughter ____a share of his property.A.has B.to have C.having D.have答案是A，D呢？
