— Can you come to my birthday party tonight? — I’d love to, but I______ on a patient at 6 o’clock.
#100074
A
will operate
B
am operating
C
will be operating
D
will have operated
推荐题目
Her sister left home in1998, and       since.
#101660
A
had not been heard of
B
has not been heard of
C
had not heard of
D
has been heard of
– I’m leaving for Beijing next week.– How long ______ there?
#101707
A
have you stayed
B
are you staying
C
had you stayed
D
did you stay