求解4道英语选择题,关于现在完成时的

求解4道英语选择题,关于现在完成时的
1.I have been here ()two weeks already
A in B after C for D since
2.Tina with her friends ()skating this weekend.
A is going B are going C has gone D has been
3.My father ()on business for two weeks,he will return in three days/
A left B has left C has gone D has been away.
4.What is the reason ()being so late for the meeting?
A of B at C with D for
我的答案分别是CADD
求解，刚学，弄不懂

1.C
【解析】现在完成时中,常用for + 时间段； since + 时间点
2.A
【解析】
①主语中含有with结构的,由前面的那个名词决定句子的单复数,排除B
②this afternoon 今天下午,将要发生,所以选is going更好些,用现在进行表将来
3.D
【解析】
①for two weeks 两周的时间,这里使用现在完成时,所以排除 A
②现在完成时中要用延续性动词,所以选择 D
4.D
【解析】the reason for 固定搭配：“……的原因”
答案看完了,就采纳一个呗!拜托啦!嘿嘿
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