When lost in work , ______ he often was , he would forget all about eating and sleeping

22 _____in the office that anyone working on the computer should not tell other people the password of the Internet access

The machine has been used much too long.________it doesn’t work well sometimes.[ ]

It is reported that great efforts made to ________ the case have paid off.

What is the matter with the pen? — The ink _______come out.