游客
题文

They were trying to remove harmful ___________ from cigarettes.

A.content B.substances C.materials D.mixtures
科目 英语   题型 单选题   难度 较易
登录免费查看答案和解析
相关试题

You’d better find an English pen friend ___ improve your writing.

A.so that B.in order that C.to D.for

There are 2100 students __ all in our school.

A.for B.at C.by D.in

You’d better __ electricity; it would be dangerous.

A.look out B.take care of C.watch out for D.care about

Mum, I think I’m __ to get back to school.---Not really, my dear.You’d better stay at home for another day or two.

A.so well B.so good C.well enough D.good enough

We were all surprised when he made it clear that he ___ office soon.

A.leaves B.would leave C.left D.had left

Copyright ©2020-2025 优题课 youtike.com 版权所有

粤ICP备20024846号