I ________ him in time, otherwise he would have fallen off the bike.

time our teacher arrives tomorrow,all the work_____,with which he will be satisfied.

－Thank you foryour coffee.－You are sokind to say so, but you _______ it at all.

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。

He has done _________ to improve his English.