______ his exercise book, he was s-考呗网题库移动版

单选题 ______ his exercise book, he was scolded by the teacher.

A． Not having handed in
B． Having not handed in
C． Not handing in
D． Handing not in

参考答案A

解析:【答案】A。解析：因为主句是过去时，没交作业是发生在过去的过去，所以状语从句应该用过去完成时。故选A。此句意为他没有上交练习册，受到了老师的责备。

单选题 I don't think______ possible to finish so much work within so short a time.

A． this
B． that
C． it's
D． it

单选题 Helen had to shout______ above the sound of the music.

A． making herself
B． to make herself hear
C． making herself heard
D． to make herself heard

单选题 You're______your time talking to him; he '11 never understand.

A． spending
B． wasting
C． losing
D． missing