What are you doing here now? —- I’m thinking _________ chatting with my good friends.

I prefer to buy a new TV rather than ________ it.

Nobody is perfect, bat everyone is different __ others.

I’ve become good friends with several of the students in my school __________ I met in the English speech contest last year.

I can’t find my pen．Could you lend me ________ ?—Sorry，I’m using it__________．