The days we look forward to _____ at las

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问题选择题

The days we look forward to _____ at last.

A. coming
B. came
C. comes
D. be coming

答案

答案：B

选择题

—What’s the matter with you?

—______ the window , my finger was cut unexpectedly.

A．Cleaning

B．To clean

C．While cleaning

D．While I was cleaning

单项选择题

下面关于操作系统的叙述中正确的是( )。

A．操作系统是计算机软件系统中的核心软件

B．操作系统属于应用软件

C．Windows是PC机唯一的操作系统

D．操作系统的5大功能是：启动、打印、显示、文件存取和关机