一I’m sorry! I would have taken him to hospital if I had known he was seriously ill.一But ______ .
#99985
A
you didn’t
B
you hadn’t
C
he wasn’t
D
you aren’t
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By the 1920s, Howard Carter ____ an explorer.
#99036
A
has become
B
had become
C
became
D
would become
---What is the terrible noise ?  ----The neighbours________their kitchen. 
#102412
A
have repaired
B
are repairing
C
repaired
D
will repair