---- John ,why are you so upset?----I _________ my cellphone all morning but it is nowhere to be found.
#100517
A
am looking for
B
have looked for
C
have been looking for
D
had looked for
推荐题目
—Does Liu Hui serve in the army? —No, but he ________ in the army for three years.
#104726
A
served
B
has served
C
is serving
D
would serve
．— What terrible weather! It ________ for ten days, more or less.— The rain season will last about a month.
#103793
A
rains
B
is raining
C
rained
D
has been raining
— 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
I first met Mr. Smith in America. He ______ at Stanford University then.
#104105
A
studied
B
has studied
C
is studying
D
was studying