--- Where is your mother?--- She _______ to Sichuan on business. She has ______ there four times recently. 
#40456
A
has gone; gone
B
has been; been
C
has gone; been
D
has been; gone
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You will _______ if you _______ late again, I think. 
#42006
A
punish; will come
B
be punished; will come
C
punish; come
D
be punished; come
Helen _______her keys in the office so she had to wait until her husband ___home.
#42524
A
has left; comes
B
left, had come
C
had left; came
D
had left; would come