题目内容：

高一英语题!~
1、Don't lose heart；keep on working hard,and you'll realize your dream————.
A、in time B、all the time C、on time D、at times
2、Jack always comes early.How————it be that he was late for the examination?
A、may B、couldC、shouldD、would
3、He heard something ————sounded strange outdoors.
A、whichB、whatC、/ D、that
4、I have recently started ———new job-presenting ———monthly reports to my company's president.
A、a；the B、the；the C、a；/ D、the；/
在线等!~~
请详细说明原因!~~