Although they feel tired, _________they still go on working. 
#56265
A
so,
B
but
C
/
D
and
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____ the Forbidden City is almost 600 years old, _____ it is still very beautiful.
#58013
A
Although; but
B
/; although
C
Although; /
D
Because; so
.—_____?     —I usually play tennis.
#56077
A
Why do you play tennis
B
What do you usually do on weekends
C
When do you play tennis
D
Where do you play tennis