问题

The workers are busy _______ windows to the new building these days.
A:fix
B:fixed
C:fixing
D:to fix;
B:fixed
C:fixing
D:to fix;
正确答案是:
同类题型
forget to bring your dictionary here for me, willyou —_______
How do you ______ the failure of your final examination ?
When________that it was getting late, I turn off the light and went to bed.
Some of us remain________at our computer for hours every day,forgetting moving our body
almost ___________ laughing when I saw what she was wearing. [ ]