---He seems to be a teacher.---______. He has been a teacher for 20 years.
#92310
A
So he does
B
So he is
C
So does he
D
So is he
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 You can’t _____ until tomorrow morning after the blood examination.
#94706
A
not only eat but also drink
B
either eat or drink
C
neither eat nor drink  
D
both eat and drink
________, the boy couldn’t enter his house. 
#94032
A
Since the key has lost
B
The key been lost
C
Lost the key
D
Having lost the key
Leonardo da Vinci (1452-1519) ____ birds kept in cages in order to have the pleasure of setting them free.
#92910
A
is said to be buying
B
is said to have bought
C
had said to buy
D
has sad to have bought