healthy” habits, such as shower everyday and sitting on the loo, _____ be bad for you

What’re you going to doto protect the environment — Plant trees on sideof the river.

Don’t open the door, ______

John practices speaking much harder than before these days.–Yes, he has ___________ his mind to improve his spoken English.

Nowadays, more and more people would rather ____ __ in the country, because there is __ ____pollution there than in the city.