The world’s population is getting larger and larger, so scientists are trying to _______ new ways to solve the food problem.
#56879
A
catch up with
B
keep up with
C
come up with
D
make up with
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China supplies more than 90 percent of the world’s rare earth metals, but its reserves only ________ about one-third of the world’s total.
#52193
A
take up
B
make up
C
build up
D
set up
The world of Dinosaurs is an amazing film which brings dinosaurs ________ on screen.
#56638
A
live
B
lively
C
alive
D
living