It is normal for kids to feel anxious and not to be able to ______ their studies just before a quiz or an examination. Parents should try their best to help them relax within their power.

下列各句中，没有语病的一句是

Mary’s got crazy and has been sent to the mental hospital. Did you tell her boss about that?—Yes, but I _______her husband first.

Peterisnothimselfthesedays.—well,couldyoutellme________

______ you do your homework, the fewer mistakes you will make.