Nobody but me ______ that either you or Tom ______to take part in this activity.

_____ side of the street is lined with different shops, _____ of which sell electronic products.

— There is still a copy of the book in the library. Will you go and borrow __________?— No, I’d rather buy __________ in the bookstore. 

 ______ is necessary for everyone to obey the traffic rules.

—Do you think playing cards is beneficial to our study?—No，if ________，it can help us kill time when we have nothing to do.