If anything _________ to the machine, please let me know.
If anything _________ to the machine, please let me know.
Please let me _________ if you could come to the party.
Please let me _________ if you could come to the party.
If my father ________ back, please let me know .
If my father ________ back, please let me know .
Please let us know what（）are involved and the time（）for delivery.
Please let us know what（）are involved and the time（）for delivery.
Should the Christmas Bear be of _______ to you, please let us know.
Should the Christmas Bear be of _______ to you, please let us know.
Please let us know if we may be ________ further assistance.
Please let us know if we may be ________ further assistance.
如果你感觉不舒服，请按钮并让我知道。 A: If you feel any shortness of breath, please let me know. B: If you have any uncomfortable feeling, please press the button and let me know. C: If you need pass motion, please let me know.
如果你感觉不舒服，请按钮并让我知道。 A: If you feel any shortness of breath, please let me know. B: If you have any uncomfortable feeling, please press the button and let me know. C: If you need pass motion, please let me know.
any change in the date of delivery, please let us know in advance.
any change in the date of delivery, please let us know in advance.
Could I ___ a receipt, please? A: buy B: have C: let
Could I ___ a receipt, please? A: buy B: have C: let
__________ you are able to come, please let us know your arrival time.
__________ you are able to come, please let us know your arrival time.