--- How come your father can read books in German?--- Well, he        on a project with some German engineers for 3 years when he was young.
#100413
A
worked
B
was working
C
had worked
D
would work
推荐题目
Put on your coat! I        you down to the doctor.
#102202
A
take
B
am taking
C
took
D
have taken
The dictionary still ______ where I ______ it a moment ago.
#100904
A
lies; laid
B
lied; lay
C
laid; laid
D
lies; lay
Would you please keep silent? The weather report            and I want to listen. 
#101657
A
is broadcast
B
has been broadcast
C
is being broadcast
D
was broadcast