--How did he get infected? --She ____the viruses without any protection.
#101629
A
exposed to
B
had exposed to
C
was exposed to
D
had been exposed
推荐题目
Jack _________ Alice for at least 20 years.
#102909
A
has married
B
has married with
C
has been married with
D
has been married to
----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
Scientists say they have found a way to produce the human body’s own cancer-killing cells through gene treatment, ______ new hope to cancer sufferers.
#104708
A
offering
B
showing
C
taking
D
making
--The window is dirty.----I know. It ______ for weeks.
#101363
A
hasn’t cleaned
B
didn’t clean
C
wasn’t cleaned
D
hasn’t been cleaned
He _______ Alice for ten years.
#100485
A
married to
B
has married to
C
has married
D
has been married to