Question

来看看这道英语语法题

＿＿＿＿that you close all the doors and windows before you leave the lab.
下划线处应填 A.Make sure B. To make sure C.Making sure D.Be made sure

Answer 1

＿＿＿＿that you close all the doors and windows before you leave the lab.
离开实验室的时候请将所有门窗关好。

A.Make sure B. To make sure
C.Making sure D.Be made sure

本题答案：A.Make sure

before you leave the lab 是时间状语，修饰前面的祈使成分。

make sure that ... 请务必....

Answer 2

A。

Answer 3

选A。make sure“确保”后面一般接that引导的宾语从句。这句话的意思是说，千万要在你离开之前把窗户和门都关上