She is a well­known doctor now, but she ________ as a cleaner at the hospital for five years.
#105075
A
has worked
B
worked
C
had worked
D
works
推荐题目
______ the help of the teacher, the student who wasn’t good at math ______ the difficult problem quickly.
#105063
A
Under; worked out
B
With; worked on
C
Under; solved
D
With; solved
This kind of tree is widely ______ in our country.
#105192
A
divided
B
constructed
C
distributed
D
separated
 I don’t know why he ________ in the middle of a sentence.
#105118
A
broke off
B
broke out
C
broke down
D
broke up