问题
He has _______ for two years.. Two years _______ a long time.
A:left home, are
B:left home , is
C:been away from home , is
D:been away from home , are;
B:left home , is
C:been away from home , is
D:been away from home , are;
正确答案是：
同类题型
Scientists say it may be fiveyears ______ it is possible to test this medicine on human patients．
It’s lucky _________ you ________ such a good teacher.
How was your last day off ––_______. It was windy and cloudy all day.
Up to now, large quantities of food ____ to Africa to save the starving people