When I ______home, I caught a thief stealing from a passer-by.
#99768
A
headed
B
was heading
C
has headed
D
had headed
推荐题目
 It’s great that all the visitors who _______ on the island were saved.
#100214
A
trapped
B
have been trapped
C
had trapped
D
had been trapped
 Visitors ________ not to touch the exhibits.
#99747
A
will request
B
are requested
C
are requesting
D
request
They made up their mind that they______ a new house once Larry changed jobs. 
#99080
A
bought
B
would buy
C
have bought
D
had bought