问题补充:
单选题Togettothetopofthemountain,wehadto_______.A.go some walkingB.do a lot of climbingC.walking a long wayD.doing a lot of climbing
答案:
B解析have to后面跟动词原形。
时间:2019-02-20 14:47:48
单选题Togettothetopofthemountain,wehadto_______.A.go some walkingB.do a lot of climbingC.walking a long wayD.doing a lot of climbing
B解析have to后面跟动词原形。