You didn’t wait for Mike last night, did you? —No, and we____ for him. He didn’t return home at all.

I bought a robot _______ have more free time.

Important _______ having an ambition is, it must be channeled in the right direction. Otherwise, it would ruin ourselves and others.

He always looks ________. Now he’s looking ________ at his new drawing.

The time he has devoted in the past 10 years______ the disabled is now considered__________ of great value.