We believe scientists will a way to solve the...

We believe scientists will 　　　　　 a way to solve the problem of air pollution.

A. set off　　 　　　 B. put off

C. come up with　　　 D. catch up with

九年级英语单项填空中等难度题查看答案及解析

We believe scientists will ______ a way to solve the problem of air pollution.

A. come up with　　　　　　　　　　　　　　 B. catch up with

C. come out　　　　　　　　　　　　　　　　　 D. come up

九年级英语单项填空中等难度题查看答案及解析

We believe governments will ________ a better way to solve the problem of water pollution.

A. take off     B. put off       C. come up with  D. catch up with

九年级英语单项填空困难题查看答案及解析

We believe we can _____　　 a way to solve the problem of pollution　 in the future.

A. catch up with　 B. come up with

C. put off　　 　　 　 D. set off

九年级英语单项填空中等难度题查看答案及解析

We hope scientists will　　　　　 ways to solve the nuclear pollution(核污染) happened in Japan.

A. be made of　　 B. cheer up

C. give up　　 D. come up with

九年级英语单项填空简单题查看答案及解析

Many people believe we will face serious problems ______we take action to change the way we live.

A. but　　 B. though　　 C. unless　　 D. until

九年级英语单项填空中等难度题查看答案及解析

Scientists from different countries are trying to_____ a good way to solve the energy problem.

A. keep up with　　　　 B. come up with

C. catch up with　     D. meet up with

九年级英语单项填空简单题查看答案及解析

Scientists from different countries are trying to_______ a good way to solve the energy problem.

A. keep up with　　 B. come up with

C. catch up with　　 D. meet up with

九年级英语单项填空简单题查看答案及解析

Scientists from different countries are trying to_______ a good way to solve the energy problem.

A. keep up with   B. come up with         C. catch up with         D. meet up with

九年级英语单项填空简单题查看答案及解析

Scientists from different countries are trying to_______ a good way to solve the energy problem.

A. keep up with　　　　 B. come up with　　      C. catch up with　　 D. meet up with

九年级英语单项填空中等难度题查看答案及解析