----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
When a pencil is partly in a glass of water, it looks as if it _______.
#104039
A
breaks
B
has broken
C
were broken
D
had been broken
Stop! You can never touch this machine when it ________, it is very dangerous.
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A
has been operated
B
will be operated
C
is operated
D
is being operated
(2013·高考浙江卷)During the last three decades，the number of people participating in physical fitness programs ________ sharply.
#99703
A
was increasing
B
has increased
C
had increased
D
will be increasing
----- How long ________ in Guilin? ----- For two weeks. I’m going to some places of interest there.
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A
did you stay
B
do you stay
C
are you staying
D
have you stayed
Nino Hernandez, who ________ only 10kg and is regarded as the world’s shortest living man, has not grown since he was 2 years old.
#102978
A
weighed
B
had weighed
C
weighs
D
has been weighed