1 .		Someone filling in as a substitute teacher doesn't usually know (he or she is/they are) needed until the phone rings that morning.
2 .		If somebody is filling in for an emergency absence, the regular teacher may not have had time to prepare a lesson plan for (him or her/them).
3 .		Anyone who has taught for first time knows that it can be an intimidating experience for (him or her/them).
4 .		Someone who lacks confidence can easily find (himself or herself/themselves) fighting a losing battle in this situation.
5 .		Anybody who is well-organized and has a sense of humor can usually get (his or her/their) job done, though.
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