问题

He asked them to come to his office one _____.

A:at a time
B:at all time
C:at times
D:at one time

正确答案是：

同类题型

Do you need any help, Lucy?— Yes, The job is _____ I could do myself.[ ]

____into English, the sentence was found to have an entirely different word order

What should I wear to attend our class day?—Dress ____ you like.

Whenever I met her，________ was fairly often，she greeted me with a sweet smile.

Tom, could you tell me _______ this morning–Sorry, Mr. Black. My alarm clock didn’t go off and I missed the train.