I’d __________ it if you could fix my laptop as soon as possible. I need it to prepare for my lecture next week. [ ]

Has Henry got usedin Shanghai?

He is a warm-hearted man and he’s never _____ a person who’s in trouble.

Professor Li always allows his students to voice their opinions in class, ______ sometimes their opinions are not sound

Willie has complained to the sales manager about the PC he bought _____ screen exploded for no reason.