The three sisters decided to hold a family party to _______ their parents’ silver wedding.
#101208
A
celebrate
B
memorize
C
congratulate
D
welcome
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 If we        earlier, we couldn’t be waiting here in a queue.
#99856
A
have started
B
started
C
start
D
had started
The manager _______ the workers how to improve the program since 9 a.m. 
#102020
A
has told
B
is telling
C
has been telling
D
will have told
The driver could have survived,  but he ____ the seat belt.
#99954
A
had been fastening
B
hadn’t fastened
C
was fastening
D
didn’t fasten