问题
选择题
ou'd better _______all the lights are off before you go to bed.
A．look through
B．find out
C．take care
D．make sure
答案
答案：D
题目分析：句意：你最好在上床睡觉之前确保所有的灯都是关着的。A.look through“看穿，仔细检查”；B.find out“找到，查出”；C.take care“照顾”；D.make sure“确保”。结合语境，故选D。