In some developed countries, larger population is ______________ in their big cities.
#105154
A
approved
B
gathered
C
concentrated
D
fixed
推荐题目
 The teacher suggested that the dictionary ______ at once .
#105058
A
be referred to be bought
B
be referred to being bought
C
referred to being bought
D
referred to be bought
He was wild with joy when he ______ a solution to the difficult problem.
#105040
A
made up with
B
put up with
C
came up with
D
kept up with
 ---This is the seat for the disabled.--- Oh, sorry. I ____________ that.
#105103
A
didn’t realize
B
don’t realize
C
haven’t realized
D
hadn’t realized