Sam is a waiter, _____ he really wants to be a singer.

Nowhere but to the dance party on Saturday evenings.

The suspect admitted _______________ the chemical inthe lab before he killed his roommate.

What he impressed ____ me most is that he will never blame his failure _______ others

He is _______ in class and has _________ for two hour.—He is so tired these days preparing for the mid-term exam.