----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
---Can I help you, sir? ---Yes. I bought this radio here yesterday, but it _____.
#104442
A
didn't work
B
wouldn't work
C
can't work
D
doesn't work
—Hi,Smith, can I borrow the meeting-room upstair this afternoon?—Sorry．It ____
#102699
A
is painted
B
is being painted
C
has painted
D
had been painted
I _____ of your trying to earn some money by taking part time jobs, but please don’t neglect your studies at university.
#99300
A
assess
B
acquire
C
appreciate
D
approve
The new tax would force companies to __________energy-saving measures.
#100738
A
adapt
B
adopt
C
adjust
D
address
This book is said to be a special one，which________many events that cannot be found in other history books.
#99198
A
writes
B
covers
C
prints
D
reads