—You seem tired, David.—Yes. I _____ all day long and can’t wait to go to bed now.
#102886
A
am working
B
had been working
C
have been working
D
was working
推荐题目
When the old man_____to walk back to his house,the sun____itself behind the mountain.
#103518
A
was starting;hid
B
had started;had already hidden
C
had started;was hiding
D
started;had already hidden