Bob tried to sweet-talk his mother into letting him go out. But when he saw his sweet talk________, he lost his temper. 
#100086
A
hadn’t worked
B
wasn’t working
C
isn’t working
D
doesn’t work
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They _____ on the program for almost one week before I joined them, and now we _____ it as no good results have come out.
#101978
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
I       Beijing in a few days. Do you know when the earliest plant      ?
#101376
A
leaves for; takes off
B
am leaving for;is taking off
C
am leaving for; takes off
D
leave for; taking off
Mr. Brown ______ his office an hour ago and he is still on his way home.
#100172
A
left
B
leaves
C
is leaving
D
was leaving