, which has been widely used in________ recent years, is ________ good way of ________ communication

Jack, you’d better make sure _____ the exact time of the train before setting out

The couple finally bought the house they wanted, for they______enough money

ple ______virtual realityholidays, we ______ on an around-the-world tour．

On the very first day of the war, the president _____ a state of emergency.