You'd better __ of the time and then we'll decide when to start tomorrow.A.be sure B.make sure
问题描述：
You'd better __ of the time and then we'll decide when to start tomorrow.A.be sure B.make sure
答
A
make sure 一般用在句首,前面美有主语，表确定，证实；
而be sure 前有主语，一般为sb. be sure to do sth./of sth./that
答
be sure of强调状态，make sure of强调动作，这里强调动作，选B
答
B
这里强调动作
答
B是确保的意思。。。意思不合。。。那么就是A了（A甚么意思记不得了//
答
make sure 不跟of连用,是个“及物词组”
所以选A