The world’s population is getting larger and larger, so scientists are trying to ______ new ways to solve the food shortage.
| A．keep up with | B．come up with |
| C．make up with | D．catch up with |
I many new friends since I came 
here．
| A．make | B．made | C．will make | D．have made |
We should protect the earth，we will have no water to drink．
| A．so | B．or | C．and | D．but |
—Why are you standing there，Kangkang?
—I can’t see the blackboard clearly．T
wo tall boys are sitting me．
| A．behind | B．next to | C．in front of | D．beside |
—are you going to Shanghai?
—I’m taking the plane．
| A．When | B．Why | C．What | D．How |
—Which is the biggest number of the four?
—．
| A．One-third | B．Two-thirds | C．A half | D．A quarter |