--We haven't heard form Jane for a long time.  ---what do you suppose ___ to her?
#103978
A
was happening
B
to happen
C
has happened
D
having happened
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The thief was caught stealing money from the shop opposite the school and _________ by the local police at the moment.
#100126
A
was questioned
B
had questioned
C
is being questioned
D
has been questioning
While the police have already done a lot of investigation, much evidence ___   __.
#102763
A
is remaining to be confirmed
B
remained to be confirmed
C
is remained to be confirmed
D
remains to be confirmed
A fire broke out in the neighborhood last night. By the time the firemen arrived, it    . 
#101011
A
had been put out
B
would put out
C
has been put out
D
was putting out