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
The man________ in the chair asked me to _____________.
#101124
A
seated; seated
B
sitting; sitting
C
seating; seat
D
seated; be seated
—— I will come to attend your lecture at 10：00 tomorrow. —— I’m sorry, by then my lecture will have ended and I＿＿＿my guests in my office.
#104665
A
is being met
B
will meet
C
will be meeting
D
will have met
Ladies and gentleman, please fasten your seat belts! The plane ________.
#103002
A
takes off
B
is taking off
C
has taken off
D
took off
------What's the matter with Tim? ------Oh, Tim's cell phone was left in a taxi accidentally, never ________ again.
#101655
A
to find
B
to be found
C
finding
D
being found
It was the first time I _______ there and I was impressed by the friendly people very much.
#100948
A
go
B
was going
C
had gone
D
have gone