—Recent pressure at work may ______ his behavior.
Is it he or you ________ in charge of the job and supposed to complete it on time?.
—How come you are always staring at me this morning?—You look stupid! The way you wear is________ annoys me most.
Various optional courses being available, we can choose ________ based on our own interest.
Come and see me whenever ___________.
The job is not very rewarding ________ money, but he is getting valuable experience from it.