I ________ with my grandma because my parents have gone abroad for further study.
#100778
A
stayed
B
am staying
C
have stayed
D
was staying
推荐题目
— You look tired.— Yes. I ___ non-stop until 8 o’clock.
#102862
A
had worked
B
work
C
have worked
D
was working
The key you have just got     the front door. 
#102563
A
is used to opening
B
is used to be opened
C
is used to being opened
D
is used to open