By the time some scientists ____ the lost towns, they ____ an awesome historical site.
#101150
A
had found, had found
B
found, found
C
found, had found
D
had found, found
推荐题目
If only I _____ a few days ago!Then I wouldn’t have been feeling so worried now.
#103366
A
looked ahead
B
could look ahead
C
were to look ahead
D
had looked ahead
——Where do you think_____he____the computer? —— Sorry.I have no idea. 
#104647
A
has ; bought
B
/; bought
C
did ; buy
D
had ; bought
 —What were you doing when I phoned you last night? —I      my painting and was starting to take a bath.
#104680
A
have already finished
B
was finishing
C
had just finished
D
was going to finish
The new school has been completed. It _____ very beautiful.
#103727
A
is looked
B
looked
C
has looked
D
looks