—Can I pay the bill by check?  —Sorry, sir. But it is the management rule of our hotel that payment ____ be made in cash. 

We forgot to bring our tickets, but please let us enter,______ ?

 There was something wrong with the network, or the e-mail____ earlier.

They didn’t attend the discussion, although they _________.

 Without the happiness Jing brought to the family, my mother _____ for another six years.