I had hoped to get to the meeting, but I found at the last minute that I couldn’t ________ it. 
#63813
A
try
B
meet
C
get
D
make
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Mr. Smith couldn’t open the door because his naughty boy ______ it from the inside.
#63798
A
would lock
B
was locking
C
has locked
D
had locked
They__________on the program for almost one week before I joined them, and now we ________on it as no good results have come out so far.
#63797
A
had been working; are still working
B
had worked; were still working
C
have been working; have worked
D
have worked; are still working