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
After he left college, he was employed in an international company and there ever since .
#104836
A
worked
B
has worked
C
had worked
D
was working
—The former president of Iraq was caught at last.—Really? Where himself?
#104842
A
has he hidden
B
had he hidden
C
was he hidden
D
has he been hidden
The moment the 28th Olympic Games _____ open, the whole world cheered.
#100014
A
declared
B
have been declared
C
have declared
D
were declared
I decided to go to the library as soon as I ______.
#104128
A
finished what I was doing
B
finished what I did
C
would finish what I was doing
D
finish what I did
Mr. Smith as well as his wife and daughter, _____ to their school twice.
#103318
A
have gone
B
has gone
C
have been
D
has been