问题

Why are your hands that dirty— Oh, I______ in the garden since we finished breakfast.

A:worked
B:was working
C:am working
D:have been working

正确答案是：

同类题型

Hi，Michelle， I can’t find my e-dictionary.— Sorry，I itI guess I put it on the top shelf with my things

_____ eastward, _____ you’ll pass mountains and thousands of lakes and forests. [ ]

I’m sure Mary will pass the driving test—I think soShe for it for months

It is not how much money you will give usbut that you are present at the ceremony ______ really matters

Look! Such heavy traffic!— I doubt _________ or not I can get to school ontime.