It is still a problem ______ to hide the stolen money. 
#23427
A
why
B
which
C
where
D
who
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What a mess!Tom,I have told you over and over again not to leave everything       .
#23373
A
in place
B
in the place
C
out of place
D
out of the place
All passengers _______, please fasten your seat belts and remain seated _______ the plane is landing.
#22186
A
on board; until
B
abroad; since
C
on the board; before
D
aboard; when
Maria _____ missed the first train so as to travel on the same one as John.
#25018
A
deliberately
B
intensively
C
decisively
D
objectively