问几道英语语法题

问几道英语语法题
1._____of the month___passed A.Half;have B.Half;has C.Half;have been
D.Half;has been 2.Regretting past failures will not help us to prepare for____
examintions.A.further B.future C.hard D.difficult 3.I ____a cold for five days
,I still can't get rid of it.A.caught B.have C.have caught D.have had
4.He had no_____accepting our offer.A.hesitation in B.hesitation of
C.hesitation at D.hesitation from