Could I clean the bedroom for you—No, thanks. I _______ it myself.

Please to your class that there will be no school tomorrow.[ ]

The one concern for parents and students is ______ if the student pursues their university education in a foreign country, the student will not have the opportunity to establish social contacts in China.

Old-fashioned phones matter when wireless networks _____ in disasters.

依次填入下列各句横线处的成语，最恰当的一组是（ ）（1）母亲_________地起床做饭，心里欣喜地想，让儿子多睡一会，不要惊醒他。（2）凡事__________，以至前怕狼、后怕虎，缺乏敢说敢为的气质。（3）他似乎很满意我对机器操作的叙述，可是我却___________，因为我自己对那机器的了解实在不多。