4I dont know____he will join us or not

If a student has a problem with classroom work，he or she should______.

If a boy or a girl has grown up in a home with sharing tasks and decisions，he or she will probably______.

According to the western culture, if one is given a compliment, he or she should say“______”.

If a teacher gives commands in English and asks students to show understanding by action or gestures，he / she is most probably using___.

Either he or I ______to the airport.

The machine he originated and perfected has no modern _____ or ancient prototype.

Virginius would feel more or less guilty when he______.

Virginius would feel more or less guilty when he _____.

Duty is an act or a course of action that people __________you to take by social customs, law or religion.

It is generally considered unwise to give a child___( )_____ he or she wants.

—How long does it take us to go to your hometown from here?—It takes us ______ hour or more to go to my hometown by ______ train.