Jane _____ these families of chimps for many years and helped people understand how much they behave like humans.
#101999
A
had studied
B
studied
C
studies
D
has studied
推荐题目
---What’s wrong with you, Mr. Keller? --- I’ve had a very bad headache for two days. At first, I ______ I caught a cold, but the medicine ______.
#102841
A
thought, hasn’t worked
B
had thought, didn’t work
C
thought, hadn’t worked
D
have thought, hasn’t worked
--David, are you 1istening to me?---Sorry, Dad. I _______ to make sense of what the reporter said.
#100681
A
was trying
B
have tried
C
am trying
D
tried
I had wanted to help you last night but I couldn't spare any time, for I ________ a composition which I have to hand in this morning.
#99472
A
wrote
B
was writing
C
had written
D
have written
The company in our city ______ those big investors from the West.
#102565
A
has a link with
B
has a hand in
C
is in line with
D
is in charge of
----Do you know our hometown at all? ----No, this is the first time I _____ here.
#102422
A
was
B
have been
C
came
D
am coming