—Mom，dad is smoking again!—Well，let him cut it ________ gradually since old habits die hard.

I heard the alarm ringing all the morning. ____ something very urgent happened.

It sounds like something is wrong with the car’s engine.      , we’d better take it to the garage immediately.

____ the search engine just gave me some brief introductions rather than the whole content of the book to read.

If a person takes drugs, they will slow down his thinking and ________ turn off his brain.