I think it is necessary for my 19-year-old son to have his own mobile phone, for I sometimes want to make sure if he _____ home for dinner.
The manager of the hotel forbids employees ________ tips from customers.
—Do you think Steven will ________ at the party tomorrow? —As far as I know, he is busy recently. He must come to celebrate your birthday, though.
—David has made great progress recently. —________, and ________.
----David, do you like the Literature Club? ----Sure. Please inform me _____ any information about it if you are free.
----Next time when you go there, you’d better tell me before you leave. ----Ok, _________.