In developed countries, farm workers _________ only a small section of the population. 
#73113
A
pick up
B
make up
C
hold up
D
keep up
推荐题目
The competition is fierce .No women or children are allowed to ________.
#68278
A
join
B
take part in
C
compete for
D
attend
There is such a problem _____ we all should _____.
#74425
A
as; pay attention to it
B
that; attract our attention
C
as; pay attention to
D
that; attract our attention to it