We________on this project for four hours.Let's have a rest.
#99184
A
are working
B
have been working
C
worked
D
had worked
推荐题目
The film ____ this Sunday.
#102694
A
is going to show
B
is showing
C
is to be shown
D
is about to be shown
I have been to Shanghai. I______ there last month.
#100143
A
go
B
went
C
has gone
D
will go