to be sure
• used to concede the truth of something that conflicts with another point that one wishes to make.
• "the ski runs are very limited, to be sure, but excellent for beginners"
be sure
• do not fail (used to emphasize an instruction).
• "be sure to pop in"
Similar:
remember to,
don't forget to,
make sure to,
see that you,
mind that you,
take care to,
be certain to,
be careful to,
Opposite:
neglect to,
forget to,