By the time we arrived at the railway station, the train _________. As a result, we missed the train.
#99915
A
left
B
is leaving
C
had left
D
leaves
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______ __ a reply, he decided to send another e-mail. 
#101796
A
Not receiving
B
Receiving not
C
Not having received
D
Having not received
— Do you agree that lions and tigers ______ the cat family?— I have no idea.
#102884
A
belong
B
are belonged to
C
are belonging to
D
belong to