Actions ______ be taken to stop H7N9 from spr...

Actions ______ be taken to stop H7N9 from spreading again.

A. must　　　　　　　　　 B. may　　　　　　　　　 C. can’t　　　　　　　　　 D. needn’t

九年级英语单项填空中等难度题查看答案及解析

Air pollution is becoming more and more serious, 　　　 actions must be taken to stop it.

A. so　　　　　　　　　　　　 B. but　　　　　　　　　　　　 C. or　　　　　　　　　　　　 D. until

九年级英语单项填空简单题查看答案及解析

We tried to stop the flames from spreading, but we knew it was ____.

九年级英语单项填空中等难度题查看答案及解析

It is well-known that such a thing must ________ happening again．

A．stop from　　　　　　　　　　 B．stopped from

C．be stopped from　　　　　　 D．to stop from

九年级英语单项填空简单题查看答案及解析

We should do something to stop sandstorms ______ happening again and again.

A. from　　 B. on　　 C. by　　 D. to

九年级英语单选题简单题查看答案及解析

We must try our best ________ pollution ________again.

A. to stop; happen

B. to stop; from happening

C. stopping; happening

D. stopping; happen

九年级英语单选题中等难度题查看答案及解析

Nothing can stop such a thing from _____ again.

A. happen　　 B. to happen　　 C. happening　　 D. happed

九年级英语单项填空中等难度题查看答案及解析

Air pollution is becoming more and more serious, ________ action must be taken to stop it.

A. so　　 B. but　　 C. or　　 D. until

九年级英语单选题简单题查看答案及解析

Facing the same virus as China, the rest of the world ________actions to prevent the spread of COVID-19, although some of them are quite different.

A.took B.takes C.will take D.has taken

九年级英语单选题简单题查看答案及解析

______ viruses from spreading, we should wash our hands more often.

A. Stop　 　　　　　 B. Stopped　　　　　 C. Stopping　　　　　　 D. To stop

九年级英语单项填空中等难度题查看答案及解析