The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.
#58925
A
keep up with
B
come up with
C
make up with
D
catch up with
推荐题目
I enjoy reading the novel that was written by Zhang Ailing.
#51938
A
written
B
writing
C
wrote
D
writes
Grandmother always her children when she feels sad.
#59150
A
thinks over
B
thinks about
C
thinks of
D
thinks out