David and Jack, _____so much alike each other, were often considered _____ twin brothers.

The mother, ________ in the kitchen, totally forgot the medicine on the table within the child’s reach.

____ to reach the headmaster on the phone, the student sent an email instead.

__________the teacher entering  the classroom, the boy pretended _______ the text.

The plan to be carried out next month needs _______ among the members of the labor union before _________ .