A number of students        trees every year and the number of them        increasing.
#85859
A
plant; is
B
plants; is
C
planting; is
D
planting; are
推荐题目
—Why are you so happy, Jim?—Because there       a basketball match between my favourite teams today.
#43955
A
is going to have
B
are going to be
C
is going to be
D
are going to have
Traditional folk arts of Tianjin like paper cutting    at the culture show. 
#85901
A
are exhibiting
B
is exhibiting
C
are being exhibited
D
is being exhibited
The factory produces half a million pairs of shoes every day, 85% ____ sold abroad.
#85579
A
of them are
B
of them is
C
of which is
D
of which are