I usually go to school by bike.— ______.

They have ________homework this weekend. -That’s ______ bad.

You must stop _______. My father is sleeping.

What’s this in English, Jack—It is a jacket.

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。