Do you know when the basketball_________?
#37140
A
is invented
B
was invented
C
has invented
D
had invented
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I don’t know when he _________ tomorrow. If he _________, I’ll let you know. 
#40387
A
comes, comes
B
will come, comes
C
comes, will come
D
came, will come
--- ________ did your uncle leave his home town?.--- Let me see. He _______ for nearly twenty years.
#39323
A
When; has left
B
When; has been away
C
How long; has left
D
How long; has been away
    TV at that time?
#39549
A
Did you watch
B
Have you watched
C
Were you watching
D
Are you watching