It is reported that large amounts of locusts(蝗虫) _____ in their activity in the north now.
I invited Mary and Jane to dinner, but of them came.
.The plant is dead . I ________ it more water.
The fact has worried many scientists ______ the earth is becoming warmer and warmer these years.
.He has ______ little education that he finds it impossible for him to equal ______ important a task.
China is playing an important role in the world. That’s Laura has come to study Chinese.