The workers ___ busily when the boss came to look for something she ___ in the office.
#103985
A
had worked; had left
B
were working; had left
C
working; had left
D
had worked; left
推荐题目
By the end of last month, ten primary schools _________ with the help of Project Hope. 
#100770
A
had set up
B
had been set up
C
was set up
D
set up
I want to buy that kind of cloth because I _____ the cloth _____ well.
#101087
A
have told; washes
B
have been told; is washed
C
was told; washed
D
have been told; washes
In the past ten years, the ____mountain climber ____ a lot from his own adventurous _______
#102427
A
experienced; experienced; experience
B
experience; experienced; experiences
C
experienced; has experienced; experiences
D
experience; has experience; experience