----This returned Chinese scholar has become one of the top experts in this field.----Yes,I know him very well.He____in Africa with animals for eight years.
#104192
A
has worke
B
had worked
C
worked
D
has been working
推荐题目
---- Why are you in such a hurry? ---- My girlfriend ____ for Shanghai. I’m going to the airport to see her off.
#103179
A
is leaving
B
has left
C
was leaving
D
left
When I got home, I _____ I had left my wallet in the taxi
#102177
A
was realizing
B
realized
C
have realized
D
would realize
．—Let’s throw a surprise party for mom’s 50th birthday.—That’s a good idea. We_________several of her friends.
#103771
A
invite
B
had invited
C
are inviting
D
will invite
— ____ sweep the classroom yesterday？—I was playing tennis with my friend．
#104570
A
Why not
B
Why didn't
C
Why don't
D
Why didn't you
(2013·湖南，34)—I don't understand why you didn't go to the lecture yesterday afternoon.—I'm so sorry.But I________my homework.
#99735
A
had done
B
was doing
C
would do
D
am doing