1.It is nearly 9 o‘clock an father will_____walk in any mone

1.It is nearly 9 o‘clock an father will_____walk in any monent
A.is possibly to B.may be C.probaly D.perhaps to
2.Satellites are ____by scentists for_____research work
A used to B used doing 为什么?
3.I didnot go there ______(becuse 还是 becuse of)hevey rain.
4.She didn’t go to work_____(becuse 还是 becuse of)she will ill.