I’ve been working all day, but I feel as if I _______ nothing.
#88119
A
have been achieved
B
were achieving
C
had achieved
D
am achieving
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 -----Why didn’t you ring me up?----- Sorry, I forgot your phone number. Otherwise, I _____ long before.
#86911
A
had rung you up
B
must run you up
C
would have rung you up
D
would ring you up
______ him well, I would have invited him to my birthday party.
#87956
A
Had I known
B
Should I know
C
If I know
D
If I knew